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known_pulsars.py
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"""
Aaron Berndsen: a module which reads the ATNF database and
GBNCC discoveries page and provides a list of known pulsars.
Pulsars are given as ephem.FixedBody objects, with all the
ATNF pulsar properties in self.props[key].
"""
import numpy as np
import re
import urllib
from BeautifulSoup import BeautifulSoup
def get_allpulsars():
"""
return dictionary of all pulsars found in
ATNF, PALFA and GBNCC databases
"""
allpulsars = {}
atnf = ATNF_pulsarlist()
two_join = {'gbncc': GBNCC_pulsarlist(),
'palfa': PALFA_pulsarlist(),
'drift' : driftscan_pulsarlist(),
'ao327' : ao327_pulsarlist(),
'deepmb' : deepmb_pulsarlist(),
'gbt350' : GBT350NGP_pulsarlist(),
'fermi' : FERMI_pulsarlist(),
'lofar' : LOFAR_pulsarlist(),
'ryan': ryan_pulsars(),
}
for k, v in atnf.iteritems():
allpulsars[k] = v
for survey, lst in two_join.iteritems():
for k, v in lst.iteritems():
if k in allpulsars:
#add it in if P0 differ by 10ms
try:
if int(100*allpulsars[k].P0) == int(100*v.P0):
print "pulsar %s from %s already in our database" % (k, survey)
continue
else:
k += 'a'
except(ValueError):
k += 'a'
allpulsars[k] = v
return allpulsars
def ATNF_pulsarlist():
"""
Contact the ATNF pulsar catalogue, returning an array of data.
Each row corresponding to one pulsar, with columns in the format:
return:
dictionary of pulsars, keyed by PSRJ
"""
#URL to get | NAME | PSRJ | RAJ | DECJ | P0 | DM |
url = 'http://www.atnf.csiro.au/research/pulsar/psrcat/proc_form.php?Name=Name&JName=JName&RaJ=RaJ&DecJ=DecJ&P0=P0&DM=DM&startUserDefined=true&c1_val=&c2_val=&c3_val=&c4_val=&sort_attr=jname&sort_order=asc&condition=&pulsar_names=&ephemeris=short&coords_unit=raj%2Fdecj&radius=&coords_1=&coords_2=&style=Short+without+errors&no_value=*&fsize=3&x_axis=&x_scale=linear&y_axis=&y_scale=linear&state=query&table_bottom.x=27&table_bottom.y=10'
sock = urllib.urlopen(url)
data = sock.read()
sock.close()
data = data.split('<pre>')[1]
data = data.split('</pre>')[0]
data = data.splitlines()[5:-1]
data = [data[i].split()[1:] for i in range(len(data)) if len(data[i]) > 1]
pulsars = {}
for line in data:
p = pulsar(*line,catalog='ATNF')
pulsars[p.psrj] = p
return pulsars
def GBNCC_pulsarlist():
"""
gather the pulsars listed on the GBNCC discover page
return:
dictionary of pulsars keyed by PSRJ
"""
pulsars = {}
url = 'http://arcc.phys.utb.edu/gbncc/'
try:
sock = urllib.urlopen(url)
data = sock.read()
soup = BeautifulSoup(data)
sock.close()
rows = soup.findAll('tr')[1:]
except(IOError):
rows = []
for row in rows:
cols = row.findAll('td')
name = cols[1].text
p0 = float(cols[2].text)/1000. #ms --> [s]
dm = cols[3].text
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
return pulsars
def LOFAR_pulsarlist():
"""
gather the pulsars listed on the LOFAR lotas discovery page
"""
pulsars = {}
url = 'http://astron.nl/pulsars/lofar/surveys/lotas/'
try:
sock = urllib.urlopen(url)
data = sock.read()
sock.close()
except(IOError):
data = ''
datas = data.splitlines()
#read until '-----------'
for n, l in enumerate(datas):
try:
if l[0] != 'J': continue
ldata = l.split()
name = ldata[0]
DM = ldata[1]
P0 = ldata[2]
ra = ldata[5]
dec = ldata[6]
pulsars[name] = pulsar(name=name, psrj=name,
ra=ra, dec=dec,
P0=P0, DM=DM,
catalog='lofar'
)
except(IndexError):
pass
return pulsars
def PALFA_pulsarlist():
"""
gather the pulsars listed on the palfa discovery page
http://www.naic.edu/~palfa/newpulsars/
return:
dictionary of pulsars keyed by PSRJ
"""
pulsars = {}
url = 'http://www.naic.edu/~palfa/newpulsars/'
try:
sock = urllib.urlopen(url)
data = sock.read()
soup = BeautifulSoup(data)
sock.close()
table = soup.findAll('table')[0] #pulsars are in first table
rows = table.findAll('tr')[1:]
except(IOError):
rows = []
pinfo = PALFA_jodrell_extrainfo()
for row in rows:
cols = row.findAll('td')
name = cols[1].text
# if name == 'J2010+31': continue #skip single-pulse
try:
p0 = np.float(cols[2].text.strip('~'))/1000. #[ms]-->[s]
except:
p0 = np.nan
if name in pinfo:
if int(pinfo[name][0]*1000) == int(p0*1000):
dm = pinfo[name][1]
else:
dm = np.nan
else:
# the website has updated to include the DM :)
try:
dm = np.float(cols[3].text.strip())
except:
dm = np.nan
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
return pulsars
def PALFA_jodrell_extrainfo():
"""
return a dictionary keyed by the pulsar name, with values
(p0, DM).
This is because http://www.naic.edu/~palfa/newpulsars/
doesn't list the DM, but
http://www.jodrellbank.manchester.ac.uk/research/pulsar/PALFA/
does.
"""
pulsars = {}
url = 'http://www.jodrellbank.manchester.ac.uk/research/pulsar/PALFA/'
try:
sock = urllib.urlopen(url)
data = sock.read()
soup = BeautifulSoup(data)
sock.close()
table = soup.findAll('table')[0] #pulsars are in first table
rows = table.findAll('tr')[1:]
except(IOError):
rows = []
for row in rows:
cols = row.findAll('td')
name = 'J%s' % cols[0].text.strip('_jb.tim')
dm = np.float(cols[3].text)
p0 = np.float(cols[2].text)/1000. #[ms] --> [s]
coords = name.strip('J')
pulsars[name] = (p0, dm)
return pulsars
def driftscan_pulsarlist():
pulsars = {}
# moved url = 'http://www.as.wvu.edu/~pulsar/GBTdrift350/'
url = 'http://astro.phys.wvu.edu/GBTdrift350/'
try:
sock = urllib.urlopen(url)
data = sock.read()
soup = BeautifulSoup(data)
sock.close()
table = soup.findAll('table')[0] #pulsars are in first table
rows = table.findAll('tr')
except(IOError, IndexError):
rows = []
for row in rows:
cols = row.findAll('td')
if len(cols) == 0: continue
name = str(cols[0].text)
p0 = np.float(cols[1].text)/1000. #[ms] --> [s]
dm = np.float(cols[2].text)
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('-')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
return pulsars
def ao327_pulsarlist():
pulsars = {}
url = 'http://www.naic.edu/~deneva/drift-search/'
try:
sock = urllib.urlopen(url)
data = sock.read()
soup = BeautifulSoup(data)
sock.close()
table = soup.findAll('table')[0] #pulsars are in first table
rows = table.findAll('tr')[1:]
except(IOError, IndexError):
rows = []
for row in rows:
cols = row.findAll('td')
name = str(cols[1].text).strip('*')
try:
p0 = np.float(cols[2].text)/1000. #[ms] --> [s]
except ValueError:
p0 = np.nan
dm = np.float(cols[3].text.strip('~'))
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('-')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
return pulsars
def deepmb_pulsarlist():
pulsars = {}
url = 'http://astro.phys.wvu.edu/dmb/'
try:
sock = urllib.urlopen(url)
data = sock.read()
soup = BeautifulSoup(data)
sock.close()
table = soup.findAll('table')[0] #pulsars are in first table
rows = table.findAll('tr')[1:]
except(IOError, IndexError):
rows = []
for row in rows:
cols = row.findAll('td')
name = str(cols[0].text)
if not name.startswith('J'):
name = 'J%s' % name
p0 = np.float(cols[1].text)/1000. #[ms] --> [s]
dm = np.float(cols[2].text.strip('~'))
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('-r')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
return pulsars
def FERMI_pulsarlist():
"""
pulsars found in :
http://arxiv.org/pdf/1205.3089v1.pdf
"""
url = 'http://arxiv.org/pdf/1205.3089v1.pdf'
lst = ["J0023+0923 GBT-350 1FGLJ0023.5+0930 3.05 14.3 0.7 0.14 0.017 BW, ",
"J0101-6422 Parkes 1FGLJ0101.06423 2.57 12.0 0.6 1.78 0.16 ",
"J0102+4839 GBT-350 1FGLJ0103.1+4840 2.96 53.5 2.3 1.67 0.18 ",
"J0307+7443 GBT-350 1FGLJ0308.6+7442 3.16 6.4 0.6 36.98 0.24 ",
"J0340+4130 GBT-350 1FGLJ0340.4+4130 3.30 49.6 1.8 Isolated ",
"J0533+67 GBT-820 2FGLJ0533.9+6759 4.39 57.4 2.4 Isolated",
"J0605+37 GBT-820 2FGLJ0605.3+3758 2.73 21.0 0.7 55.6 0.18",
"J0614-3329 GBT-820 1FGLJ0614.13328 3.15 37.0 1.9 53.6 0.28 ",
"J0621+25 GBT-820 2FGLJ0621.2+2508 2.72 83.6 2.3 TBD",
"J1103-5403 Parkes 1FGLJ1103.95355 3.39 103.9 2.5 Isolated NA [18]",
"J1124-3653 GBT-350 1FGLJ1124.43654 2.41 44.9 1.7 0.23 0.027 BW, ",
"J1124-36 GMRT-325 1FGLJ1124.43654 5.55 45.1 1.7 TBD NA",
"J1142+0119 GBT-820 1FGLJ1142.7+0127 5.07 19.2 0.9 1.58 0.15",
"J1207-5050 GMRT-610 1FGLJ1207.05055 4.84 50.6 1.5 Isolated?",
"J1231-1411 GBT-820 1FGLJ1231.11410 3.68 8.1 0.4 1.86 0.19 ",
"J1301+0833 GBT-820 1FGLJ1301.8+0837 1.84 13.2 0.7 0.27 0.024 BW",
"J1302-32 GBT-350 1FGLJ1302.33255 3.77 26.2 1.0 0.78 0.15 [16]",
"J1312+0051 GBT-820 1FGLJ1312.6+0048 4.23 15.3 0.8 38.5 0.18 ",
"J1514-4946 Parkes 1FGLJ1514.14945 3.59 30.9 0.9 1.92 0.17 ",
"J1536-4948 GMRT-325 1FGLJ1536.54949 3.08 38.0 1.8 TBD",
"J1544+4937 GMRT-610 18M3037 2.16 23.2 1.2 0.117 0.018 BW [7]",
"J1551-06x GBT-350 1FGLJ1549.70659 7.09 21.6 1.0 5.21 0.20 [16]",
"J1628-3205 GBT-820 1FGLJ1627.83204 3.21 42.1 1.2 0.21 0.16 RB",
"J1630+37 GBT-820 2FGLJ1630.3+3732 3.32 14.1 0.9 12.5 0.16",
"J1646-2142 GMRT-325 1FGLJ1645.02155c 5.85 29.8 1.1 23 TBD",
"J1658-5324 Parkes 1FGLJ1658.85317 2.43 30.8 0.9 Isolated ",
"J1745+1017 Elsberg 1FGLJ1745.5+1018 2.65 23.9 1.3 0.73 0.014 BW, ",
"J1747-4036 Parkes 1FGLJ1747.44036 1.64 153.0 3.4 Isolated ",
"J1810+1744 GBT-350 1FGLJ1810.3+1741 1.66 39.6 2.0 0.15 0.045 BW, ",
"J1816+4510 GBT-350 1FGLJ1816.7+4509 3.19 38.9 2.4 0.36 0.16 y, RB, ",
"J1828+0625 GMRT-325 1FGLJ1830.1+0618 3.63 22.4 1.2 6.0 TBD",
"J1858-2216 GBT-820 1FGLJ1858.12218 2.38 26.6 0.9 46.1 0.22 ",
"J1902-5105 Parkes 1FGLJ1902.05110 1.74 36.3 1.2 2.01 0.16 ",
"J1902-70 Parkes 2FGLJ1902.77053 3.60 19.5 0.8 TBD",
"J2017+0603 Nancay 1FGLJ2017.3+0603 2.90 23.9 1.6 2.2 0.18 ",
"J2043+1711 Nancay 1FGLJ2043.2+1709 2.38 20.7 1.8 1.48 0.17 ",
"J2047+1053 GBT-820 1FGLJ2047.6+1055 4.29 34.6 2.0 0.12 0.036 BW, ",
"J2129-0429 GBT-350 1FGLJ2129.80427 7.62 16.9 0.9 0.64 0.37 RB [16]",
"J2214+3000 GBT-820 1FGLJ2214.8+3002 3.12 22.5 1.5 0.42 0.014 BW, ",
"J2215+5135 GBT-350 1FGLJ2216.1+5139 2.61 69.2 3.0 0.17 0.21 RB, ",
"J2234+0944 Parkes 1FGLJ2234.8+0944 3.63 17.8 1.0 0.42 0.015 BW, ",
"J2241-5236 Parkes 1FGLJ2241.95236 2.19 11.5 0.5 0.14 0.012 BW, ",
"J2302+4442 Nancay 1FGLJ2302.8+4443 5.19 13.8 1.2 125.9 0.3 ",
]
###
lst2 = [
"J0023+0923 00:23:30 +09:23:00 0.003050 14.300 MSP Fermi",
"J0102+4839 01:02:00 +48:39:00 0.002960 53.500 MSP Fermi",
"J0307+7443 03:07:00 +74:43:00 0.003160 6.400 MSP Fermi",
"J0340+4130 03:40:24 +41:30:00 0.003300 49.600 MSP Fermi",
"J0533+67 05:33:54 +67:59:00 0.004390 57.400 MSP Fermi",
"J0605+37 06:05:18 +37:58:00 0.002730 21.000 MSP Fermi",
"J0621+25 06:21:12 +25:08:00 0.002720 83.600 MSP Fermi",
"J1124-3653 11:24:24 -36:53:00 0.002410 44.900 MSP Fermi",
"J1142+0119 11:42:42 +01:19:00 0.005070 19.200 MSP Fermi",
"J1207-5050 12:07:00 -50:50:00 0.004840 50.600 MSP Fermi",
"J1301+0833 13:01:48 +08:33:00 0.001840 13.200 MSP Fermi",
"J1312+0051 13:12:36 +00:51:00 0.004230 15.300 MSP Fermi",
"J1514-4946 15:14:06 -49:46:00 0.003590 30.900 MSP Fermi",
"J1536-4948 15:36:30 -49:48:00 0.003080 38.000 MSP Fermi",
"J1544+4937 15:44:00 +49:37:00 0.002160 23.200 MSP Fermi",
"J1551-06 15:51:00 -06:59:00 0.007090 21.600 MSP Fermi",
"J1628-3205 16:27:48 -32:05:00 0.003210 42.100 MSP Fermi",
"J1630+37 16:30:18 +37:32:00 0.003320 14.100 MSP Fermi",
"J1646-2142 16:46:00 -21:42:00 0.005850 29.800 MSP Fermi",
"J1658-5324 16:58:48 -53:24:00 0.002430 30.800 MSP Fermi",
"J1745+1017 17:45:30 +10:17:00 0.002650 23.900 MSP Fermi",
"J1747-4036 17:47:24 -40:36:00 0.001640 153.000 MSP Fermi",
"J1810+1744 18:10:18 +17:44:00 0.001660 39.600 MSP Fermi",
"J1816+4510 18:16:42 +45:10:00 0.003190 38.900 MSP Fermi",
"J1828+0625 18:28:00 +06:25:00 0.003630 22.400 MSP Fermi",
"J1858-2216 18:58:06 -22:16:00 0.002380 26.600 MSP Fermi",
"J1902-5105 19:02:00 -51:05:00 0.001740 36.300 MSP Fermi",
"J1902-70 19:02:42 -70:53:00 0.003600 19.500 MSP Fermi",
"J2047+1053 20:47:36 +10:53:00 0.004290 34.600 MSP Fermi",
"J2129-0429 21:29:48 -04:29:00 0.007620 16.900 MSP Fermi",
"J2215+5135 22:15:00 +51:35:00 0.002610 69.200 MSP Fermi",
"J2234+0944 22:34:48 +09:44:00 0.003630 17.800 MSP Fermi",
"J1400-56 14:00:00 -56:00:00 0.410700 123.000 YPSR Fermi",
"J1203-62 12:03:00 -62:00:00 0.393090 285.000 YPSR Fermi",
]
pulsars = {}
for row in lst:
name = row.split()[0]
p0 = float(row.split()[3])/1000. #[ms] --> [s]
dm = float(row.split()[4])
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('-')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
for row in lst2:
name = row.split()[0]
p0 = float(row.split()[3])
dm = float(row.split()[4])
ra = row.split()[1]
dec = row.split()[2]
pulsars[name] = pulsar(name=name, psrj=name,
ra=ra, dec=dec, P0=p0,
DM=dm, gbncc=False,
catalog='FERMI')
return pulsars
def GBT350NGP_pulsarlist():
"""
pulsars found in:
http://arxiv.org/pdf/0710.1745v1.pdf
name, P[ms], DM
"""
url = 'http://arxiv.org/pdf/0710.1745v1.pdf'
lst = ['J0033+57 315 76',
'J0033+61 912 37',
'J0054+66 1390 15',
'J0058+6125 637 129',
'J0240+62 592 4 ',
'J0243+6027 1473 141',
'J0341+5711 1888 100',
'J0408+55A 1837 55 ',
'J0408+55B 754 64 ',
'J0413+58 687 57 ',
'J0419+44 1241 71 ',
'J0426+4933 922 85',
'J0519+44 515 52',
'J2024+48 1262 99',
'J2029+45 1099 228',
'J2030+55 579 60',
'J2038+35 160 58',
'J2043+7045 588 57',
'J2102+38 1190 85',
'J2111+40 4061 120 ',
'J2138+4911 696 168',
'J2203+50 745 79',
'J2208+5500 933 105',
'J2213+53 751 161',
'J2217+5733 1057 130',
'J2222+5602 1336 168',
'J2238+6021 3070 182',
'J2244+63 461 92',
'J2315+58 1061 74',
'J2316+64 216 248',
'J2326+6141 790 33',
'J2343+6221 1799 117',
'J2352+65 1164 152',
]
pulsars = {}
for row in lst:
name, p0, dm = row.split()
p0 = float(p0)/1000. #[ms] --> [s]
dm = float(dm)
coords = name.strip('J')
if '+' in coords:
raj = coords.split('+')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('+')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('+%s:00' % match)
gbncc = True
else:
decj = str('+%s:%s' % (match[0:2],match[2:4]))
gbncc = False
else:
raj = coords.split('-')[0]
raj = str('%s:%s' % (raj[0:2],raj[2:]))
tmp = coords.split('-')[1]
match = re.match('\d+',tmp).group(0)
if len(match) == 2:
decj = str('-%s:00' % match)
gbncc = True
else:
decj = str('-%s:%s' % (match[0:2],match[2:4]))
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=raj, dec=decj,
P0=p0, DM=dm, gbncc=gbncc,
catalog=url)
return pulsars
#
# ______ __ __| | ___________ _______
# \____ \| | \ | / ___/\__ \\_ __ \
# | |_> > | / |__\___ \ / __ \| | \/
# | __/|____/|____/____ >(____ /__|
# |__| \/ \/
#
class pulsar():
"""
A simple class describing a pulsar.
Only tracks: name, ra, dec, P0, DM
ra/dec should be in HH:MM:SS or DD:MM:SS format
"""
def __init__(self, name, psrj, ra, dec, P0, DM, gbncc=False, catalog=None):
self.name = name
self.psrj = psrj
self.ra = ra
self.dec = dec
#keep track if this was listed on GBNCC page
#since it only gives DEC to nearest degree (used in matching)
self.gbncc = gbncc
try:
self.P0 = float(P0)
except ValueError:
self.P0 = np.nan
try:
self.DM = float(DM)
except:
self.DM = np.nan
self.catalog = catalog
def hhmm2deg(hhmm):
"""
given string 'hhmmss' or 'hh:mm:ss' (of varying length), convert to
degrees
"""
deg = 0.0
if ':' in hhmm:
s = hhmm.split(':')
ncomp = len(s)
if ncomp == 1:
deg = float(s[0])*360./24.
elif ncomp == 2:
deg = (float(s[0]) + float(s[1])/60.)*360./24.
elif ncomp >= 3:
deg = (float(s[0]) + float(s[1])/60. + float(s[2])/3600.)*360./24.
else:
if len(hhmm) == 2:
deg = float(hhmm)*360./24.
elif len(hhmm) == 4:
deg = (float(hhmm[0:2]) + float(hhmm[2:4])/60.) *360./24.
elif len(hhmm) >= 6:
deg = (float(hhmm[0:2]) + float(hhmm[2:4])/60.\
+ float(hhmm[4:6])/3600.)*360./24.
return deg
def ddmm2deg(ddmm):
"""
given string 'hhmmss' or 'hh:mm:ss', convert to
degrees
"""
if '-' in ddmm:
sgn = -1
else:
sgn = 1
if ':' in ddmm:
s = ddmm.split(':')
ncomp = len(s)
if ncomp == 1:
deg = abs(float(s[0]))
elif ncomp == 2:
deg = abs(float(s[0])) + float(s[1])/60.
elif ncomp >= 3:
deg = abs(float(s[0])) + float(s[1])/60. + float(s[2])/3600.
else:
if len(ddmm) == 2:
deg = abs(float(ddmm))
elif len(ddmm) == 3: # matches +?? or -??
deg = abs(float(ddmm))
elif len(ddmm) == 4:
deg = abs(float(ddmm[0:2])) + float(ddmm[2:4])/60.
elif len(ddmm) >= 6:
deg = abs(float(ddmm[0:2])) + float(ddmm[2:4])/60.\
+ float(ddmm[4:6])/3600.
return deg*sgn
def matches(allpulsars, pulsar, sep=.6, harm_match=False, DM_match=False):
"""
given a dictionary of all pulsars and a pulsar object,
return the objects within 'sep' degrees of the pulsar.
args:
allpulsars : dictionary of allpulsars
pulsar : object of interest
sep : degrees of separation [default .6 deg]
Optional:
harmonic_match : [default False], if True reject match if it is
not a harmonic ratio
(we print the rejected object so you can follow up)
DM_match : [default False], if True reject match if it is there
is a 15% difference in DM
Notes:
*because GBNCC only gives Dec to nearest degree, we consider
things close if they are separated by less than a degree in dec,
and 'sep' in RA
*if the known pulsar is a 'B' pulsar, we use a sep of max(sep, 5degrees)
"""
matches = {}
pra = hhmm2deg(pulsar.ra)
pdec = ddmm2deg(pulsar.dec)
orig_sep = sep
for k, v in allpulsars.iteritems():
amatch = False
## find positional matches
ra = hhmm2deg(v.ra)
dec = ddmm2deg(v.dec)
#use very wide "beam" for bright pulsars (the "B" pulsars)
if v.name.startswith('B'):
sep = max(orig_sep, 2.5)
else:
sep = orig_sep
dra = abs(ra - pra)*np.cos(pdec*np.pi/180.)
ddec = abs(dec - pdec)
if v.gbncc or pulsar.gbncc:
#make sure dec is at least one degree
if dra <= sep and ddec <= max(1.2,sep):
amatch = True
elif dra <= sep and ddec <= sep:
amatch = True
## reject nearby objects if they aren't harmonics
if amatch and harm_match:
max_denom = 100
num, den = harm_ratio(np.round(pulsar.P0,5), np.round(v.P0,5),
max_denom=max_denom)
if num == 0:
num = 1
den = max_denom
pdiff = abs(1. - float(den)/float(num) *pulsar.P0/v.P0)
if pdiff > 1:
amatch = False
print "%s is not a harmonic match (rejecting)" % k
## reject nearby objects if 15% difference in DM
if amatch and DM_match:
if (v.DM != np.nan) and (pulsar.DM != 0.):
dDM = abs(v.DM - pulsar.DM)/pulsar.DM
if dDM > 0.15:
amatch = False
print "%s has a very different DM (rejecting)" % k
## finally, we've passed location, harmonic and DM matching
if amatch:
matches[v.name] = v
return sorted(matches.values(), key=lambda x: x.name, reverse=True) #gives a sorted list
def harm_ratio(a,b,max_denom=100):
"""
given two numbers, find the harmonic ratio
"""
c = fractions.Fraction(a/b).limit_denominator(max_denominator=max_denom)
return c.numerator, c.denominator
def ryan_pulsars():
"""
return the list of pulsars that Ryan Lynch provided
"""
pulsars = {}
for row in ryans_list.splitlines():
if not row: continue
if row.startswith('#'): continue
try:
name, ra, dec, p0, dm, typ, catalog = row.split()
except(ValueError):
continue
if len(dec.split(':')) == 2 or '00:00' in dec:
#Dec not listed accurately
gbncc = True
else:
gbncc = False
pulsars[name] = pulsar(name=name, psrj=name,
ra=ra, dec=dec,
P0=p0, DM=dm, gbncc=gbncc,
catalog=catalog)
return pulsars
ryans_list = """# New GBNCC pulsars
J0636+51 06:36:59 +51:29:42 0.002869 11.110 MSP GBNCC
J0645+51 06:45:58 +51:50:06 0.008535 18.242 MSP GBNCC
J0740+41 07:40:45 +41:03:53 0.003139 20.833 MSP GBNCC
J0741+66 07:41:59 +66:20:11 0.002886 14.960 MSP GBNCC
J1124+78 11:24:18.59 +78:22:22.6:49 0.004201 11.220 MSP GBNCC
J1649+80 16:49:54 +80:44:49 0.002021 31.090 MSP GBNCC
J1710+49 17:10:29 +49:19:51 0.003220 7.087 MSP GBNCC
J1816+45 18:16:36 +45:10:34 0.003193 38.896 MSP GBNCC
J1953+67 19:53:12 +67:01:46 0.008565 57.161 MSP GBNCC
J0125+62 01:25:42 +62:35:55 1.708233 117.688 NRP GBNCC
J0216+52 02:16:19 +52:13:52 0.024576 22.050 ??? GBNCC
J0357+66 03:57:32 +66:40:06 0.091507 62.310 ??? GBNCC
J0510+38 05:09:59 +38:12:11 0.076564 69.226 ??? GBNCC
J1432+72 14:32:32 +72:36:06 0.041741 12.586 ??? GBNCC
J1939+66 19:39:49 +66:11:38 0.022261 41.221 ??? GBNCC
J0053+69 00:53:24 +69:38:45 0.832903 116.679 NRP GBNCC
J0059+50 00:59:12 +50:01:58 0.996009 67.008 NRP GBNCC
J0112+66 01:12:37 +66:21:40 4.301240 112.127 NRP GBNCC
J0136+63 01:36:19 +63:42:22 0.717895 285.939 NRP GBNCC
J0213+52 02:13:22 +52:31:38 0.376384 37.925 NRP GBNCC
J0325+67 03:25:54 +67:49:10 1.364741 65.268 NRP GBNCC
J0338+66 03:38:35 +66:44:04 1.762000 66.561 NRP GBNCC
J0359+42 03:59:36 +41:59:56 0.226478 46.240 NRP GBNCC
J0519+54 05:19:48 +54:25:18 0.340194 42.598 NRP GBNCC
J0610+37 06:10:39 +37:18:14 0.443861 38.738 NRP GBNCC
J0614+83 06:14:03 +83:13:46 1.039203 44.134 NRP GBNCC
J0645+80 06:45:32 +80:08:54 0.657873 49.723 NRP GBNCC
J0737+69 07:37:10 +69:13:46 6.824240 16.288 NRP GBNCC
J0746+66 07:46:28 +66:36:29 0.407670 27.785 NRP GBNCC
J0749+57 07:49:56 +57:00:10 1.174875 26.610 NRP GBNCC
J0943+41 09:43:22 +41:08:57 2.229489 21.286 NRP GBNCC
J1101+65 11:01:34 +65:07:06 3.631320 18.504 NRP GBNCC
J1110+58 11:10:41 +58:52:00 0.793348 26.406 NRP GBNCC
J1320+67 13:20:58 +67:30:18 1.028620 27.981 NRP GBNCC
J1627+86 16:27:02 +86:54:29 0.395785 46.474 NRP GBNCC
J1629+43 16:29:20 +43:58:57 0.181173 7.342 NRP GBNCC
J1647+66 16:47:38 +66:03:57 1.599862 22.739 NRP GBNCC
J1706+59 17:06:44 +59:09:36 1.476687 30.596 NRP GBNCC
J1800+50 18:00:44 +50:28:26 0.578364 22.550 NRP GBNCC
J1815+55 18:15:03 +55:28:40 0.426802 58.800 NRP GBNCC
J1821+41 18:21:41 +41:44:34 1.261787 40.312 NRP GBNCC
J1859+76 18:59:01 +76:53:34 1.393617 47.140 NRP GBNCC
J1921+42 19:21:56 +42:24:39 0.595186 53.184 NRP GBNCC
J1922+58 19:22:05 +58:27:59 0.529623 53.250 NRP GBNCC
J1935+52 19:35:05 +52:11:33 0.568387 71.065 NRP GBNCC
J1941+43 19:41:32 +43:23:01 0.840801 79.440 NRP GBNCC
J1942+81 19:42:03 +81:06:03 0.203558 40.189 NRP GBNCC
J1954+43 19:54:58 +43:50:08 1.386961 130.183 NRP GBNCC
J2001+42 20:01:30 +42:43:19 0.719161 54.950 NRP GBNCC
J2017+59 20:17:53 +59:12:52 0.403169 60.840 NRP GBNCC
J2027+74 20:27:34 +74:46:32 0.515229 11.064 NRP GBNCC
J2122+54 21:22:46 +54:32:43 0.138866 31.709 NRP GBNCC
J2137+64 21:37:20 +64:19:03 1.750870 105.640 NRP GBNCC
J2205+62 22:05:38 +62:04:38 0.322787 167.200 NRP GBNCC
J2207+40 22:07:17 +40:57:24 0.636985 11.607 NRP GBNCC
J2228+64 22:28:38 +64:57:50 1.893120 194.311 NRP GBNCC
J2243+69 22:43:34 +69:39:34 0.855374 68.028 NRP GBNCC
J2316+69 23:16:54 +69:12:03 0.813413 71.160 NRP GBNCC
J2353+85 23:53:30 +85:34:14 1.011759 38.319 NRP GBNCC
# Soon-to-be published GBT 350 MHz Drift-scan pulsars
J0348+0432 03:48:43.63 +04:32:11.45 0.039123 40.569 PRP Drift
J0458-0505 04:58:37.12 -05:05:05.13 1.883480 47.806 NRP Drift
J2033+0042 20:33:31.11 +00:42:21.96 5.013398 37.841 NRP Drift
J1501-0046 15:01:44.95 -00:46:23.52 0.464037 22.258 NRP Drift
J1518-0627 15:18:59.11 -06:27:07.69 0.794997 27.963 NRP Drift
J1547-0944 15:47:46.05 -09:44:07.80 1.576925 37.416 NRP Drift
J1853-0649 18:53:25.42 -06:49:25.94 1.048132 44.541 NRP Drift
J1918-1052 19:18:48.24 -10:52:46.37 0.798693 62.731 NRP Drift
J2013-0649 20:13:17.75 -06:49:05.39 0.580187 63.368 NRP Drift
J1923+2515 19:23:22.49 +25:15:40.64 0.003788 18.858 MSP Drift
J1327-0755 13:27:57.58 -07:55:29.80 0.002678 27.895 MSP Drift
J1555-0515 15:55:40.10 -05:15:56.84 0.975410 23.489 NRP Drift
J1612+2008 16:12:23.42 +20:08:18.37 0.426646 19.539 NRP Drift
J1623-0841 16:23:42.71 -08:41:36.37 0.503015 60.433 NRP Drift
J1633-2009 16:33:55.34 -20:09:58.55 0.935557 48.201 NRP Drift
J1735-0243 17:35:48.30 -02:43:51.24 0.782887 55.321 NRP Drift
J1737-0811 17:37:47.11 -08:11:08.88 0.004175 55.350 MSP Drift
J1903-0848 19:03:11.26 -08:48:56.78 0.887325 66.987 NRP Drift
J1941+0121 19:41:16.04 +01:21:39.50 0.217317 52.646 NRP Drift
J2012-2029 20:12:46.75 -20:29:42.18 0.544002 37.632 NRP Drift
J2033-1938 20:33:54.76 -19:38:27.03 1.281719 23.469 NRP Drift
J2111+2106 21:11:33.12 +21:06:07.01 3.953853 59.772 NRP Drift
J2222-0137 22:22:05.96 -01:37:15.72 0.032818 3.278 PRP Drift
J2256-1024 22:56:45.00 -10:24:37.00 0.002295 13.777 MSP Drift
# Already published GBT 350 MHz Drift-scan pulsars
#J1023+0038 10:23:47.68 +00:38:40.85 0.001688 14.325 MSP Drift
#New GBT 350 MHz Drift-scan pulsars
J0337+17 03:37:37.50 +17:14:31.00 0.002733 21.320 NRP Drift
J0931-19 09:31:28 -19:05:11 0.004638 41.483 MSP Drift
J1930-01 19:30:05 -01:53:32 0.593683 35.959 NRP Drift
J1745-01 17:45:47 -01:03:45 0.679534 67.459 NRP Drift
J1758-10 17:58:52 -10:15:57 2.512740 119.740 NRP Drift
J1132+24 11:32:09 +24:55:59 0.507072 23.269 NRP Drift
J1444+18 14:44:08 +18:00:20 0.132518 16.988 NRP Drift
J1543-07 15:43:45 -07:05:36 0.242063 30.378 NRP Drift
J1643-10 16:43:02 -10:15:09 0.062716 76.004 ??? Drift
# New GBT 350 MHz Drift-scan RRATs
J1704-04 17:04:54 -04:40:38 0.238000 43.000 RRAT Drift
J1914-11 19:14:46 -11:29:34 * 90.000 RRAT Drift
J1537+23 15:37:47 +23:50:51 3.450000 15.000 RRAT Drift
J1944-11 19:44:09 -10:17:07 0.409000 31.000 RRAT Drift
J2006+20 20:06:55 +20:06:55 4.630000 66.000 RRAT Drift
J2324-05 23:24:22 -05:07:36 0.869000 15.000 RRAT Drift
# New GBT North Galactic Plane pulsars
J0033+57 00:33:00 +57:00:00 0.315000 76.000 NRP GBTNGP
J0033+61 00:33:00 +61:00:00 0.912000 37.000 NRP GBTNGP
J0054+66 00:54:00 +66:00:00 1.390000 15.000 NRP GBTNGP
J0058+6125 00:58:00 +61:25:00 0.637000 129.000 NRP GBTNGP
J0240+62 02:40:00 +62:00:00 0.592000 4.000 NRP GBTNGP
J0243+6027 02:43:00 +60:27:00 1.473000 141.000 NRP GBTNGP
J0341+5711 03:41:00 +57:11:00 1.888000 100.000 NRP GBTNGP
J0408+55A 04:08:00 +55:00:00 1.837000 55.000 NRP GBTNGP
J0408+55B 04:08:00 +55:00:00 0.754000 64.000 NRP GBTNGP
J0413+58 04:13:00 +58:00:00 0.687000 57.000 NRP GBTNGP
J0419+44 04:19:00 +44:00:00 1.241000 71.000 NRP GBTNGP
J0426+4933 04:26:00 +49:33:00 0.922000 85.000 NRP GBTNGP
J0519+44 05:19:00 +44:00:00 0.515000 52.000 NRP GBTNGP
J2024+48 20:24:00 +48:00:00 1.262000 99.000 NRP GBTNGP
J2029+45 20:29:00 +45:00:00 1.099000 228.000 NRP GBTNGP
J2030+55 20:30:00 +55:00:00 0.579000 60.000 NRP GBTNGP
J2038+35 20:38:00 +35:00:00 0.160000 58.000 NRP GBTNGP
J2043+7045 20:43:00 +70:45:00 0.588000 57.000 NRP GBTNGP
J2102+38 21:02:00 +38:00:00 1.190000 85.000 NRP GBTNGP
J2111+40 21:11:00 +40:00:00 4.061000 120.000 NRP GBTNGP
J2138+4911 21:38:00 +49:11:00 0.696000 168.000 NRP GBTNGP
J2203+50 22:03:00 +50:00:00 0.745000 79.000 NRP GBTNGP
J2208+5500 22:08:00 +55:00:00 0.933000 105.000 NRP GBTNGP
J2213+53 22:13:00 +53:00:00 0.751000 161.000 NRP GBTNGP
J2217+5733 22:17:00 +57:33:00 1.057000 130.000 NRP GBTNGP
J2222+5602 22:22:00 +56:02:00 1.336000 168.000 NRP GBTNGP
J2238+6021 22:38:00 +60:21:00 3.070000 182.000 NRP GBTNGP
J2244+63 22:44:00 +63:00:00 0.461000 92.000 NRP GBTNGP
J2315+58 23:15:00 +58:00:00 1.061000 74.000 NRP GBTNGP
J2316+64 23:16:00 +64:00:00 0.216000 248.000 NRP GBTNGP
J2326+6141 23:26:00 +61:41:00 0.790000 33.000 NRP GBTNGP
J2343+6221 23:43:00 +62:21:00 1.799000 117.000 NRP GBTNGP
J2352+65 23:52:00 +65:00:00 1.164000 152.000 NRP GBTNGP
# New PALFA pulsars
J0557+15 05:57:34.90 +15:51:28.10 0.002556 102.655 MSP PALFA
J1851+0242 18:51:22 +02:42:37 1.497140 534.100 NRP PALFA
J1855+03 18:55:41.00 +03:07:07.10 1.633460 625.600 NRP PALFA
J1857+02 18:57:13.10 +02:59:46.40 0.772747 681.387 NRP PALFA
J1858+0319 18:58:39.50 +03:19:01.90 0.867378 289.827 NRP PALFA
J1900+04 19:00:14 +04:39:08 0.312302 638.958 NRP PALFA
J1901+0510 19:01:48 +05:10:20 0.657154 417.900 NRP PALFA
J1903+06 19:03:52.70 +06:54:09.30 0.791215 353.302 NRP PALFA
J1905+04 19:05:00.70 +04:53:05.00 0.006092 182.859 MSP PALFA
J1907+09 19:07:02.90 +09:00:47.90 1.527060 189.864 NRP PALFA
J19088+08 19:08:18.30 +08:31:43.90 0.512203 698.100 NRP PALFA
J1912+09 19:12:02.90 +09:24:51.40 0.323839 490.950 NRP PALFA
J1913+10 19:13:31.90 +10:50:12.80 0.190666 230.048 NRP PALFA
J1913+1102 19:13:35 +11:02:56 0.027295 338.218 ??? PALFA
J1914+14 19:14:56.30 +14:28:13.60 1.159482 206.035 NRP PALFA
J1918+13 19:18:44.10 +13:10:16.40 0.856741 247.412 NRP PALFA
J1922+11 19:22:48.90 +11:33:47.20 0.562065 331.295 NRP PALFA
J1929+11 19:29:20.70 +11:57:24.2 3.218000 80.000 RRAT PALFA
J1933+17 19:33:20.80 +17:28:06.50 0.021510 156.600 ??? PALFA
J1938+2013 19:38:42.50 +20:12:56.70 0.002634 237.088 MSP PALFA
J1953+24 19:53:59 +24:07:44 0.193406 80.825 NRP PALFA
J2005+26 20:05:01.90 +26:55:23.70 0.665846 158.548 NRP PALFA
J1853+03 18:53:12.50 +02:59:59.80 0.585533 290.200 NRP PALFA
J1854+0320 18:54:05.20 +03:20:42.50 0.628499 479.482 NRP PALFA
J1901+05 19:01:22.20 +04:59:58.10 0.877073 1103.561 NRP PALFA
J1902+03 19:02:05.10 +03:00:48.60 0.007796 254.087 MSP PALFA
J1906+01 19:06:46.80 +00:55:03.60 0.002789 127.000 MSP PALFA
J1906+05 19:06:52.90 +05:10:16.10 0.397588 104.561 NRP PALFA
J1907+02 19:07:11 +02:56:18 0.618789 250.403 NRP PALFA
J1907+06 19:07:09.90 +06:30:13.10 0.323622 427.575 YPSR PALFA
J1908+08 19:07:57.10 +08:33:23.50 0.167616 511.532 NRP PALFA
J1909+11 19:09:23.10 +11:49:30.90 0.448956 204.452 NRP PALFA
J1909+12 19:09:57.70 +12:04:55.30 1.229338 292.481 NRP PALFA
J1910+05 19:10:40.50 +05:17:37.80 0.308038 305.853 NRP PALFA
J1910+1017 19:10:29.40 +10:17:33.90 0.411089 636.561 NRP PALFA