def psrparams_from_list(pplist):
psr = presto.psrparams()
psr.p = pplist[0]
psr.orb.p = pplist[1]
psr.orb.x = pplist[2]
psr.orb.e = pplist[3]
psr.orb.w = pplist[4]
psr.orb.t = pplist[5]
return psr
def psrparams_from_list(pplist):
psr = presto.psrparams()
psr.p = pplist[0]
psr.orb.p = pplist[1]
psr.orb.x = pplist[2]
psr.orb.e = pplist[3]
psr.orb.w = pplist[4]
psr.orb.t = pplist[5]
return psr
if ctype=='WD':
numjobs = 3
else:
numjobs = 5
else:
numjobs = 1
# Begin the loop over the candidates
widths = []
for i in range(numloops):
# Generate the fake pulsar parameters
if myid==0:
psr = fake_mspsr(companion = ctype)
psrlist = psrparams_to_list(psr)
else:
psr = presto.psrparams()
psrlist = None
if parallel:
psrlist = bcast_general(psrlist, myid, 0)
if myid==0: psrlist = psrparams_to_list(psr)
else: psr = psrparams_from_list(psrlist)
if debugout:
allproc_print(numprocs, 'Psr period =', psr.p)
print ''
print 'Trial', i
if debugout:
print ''
print ' PSR mass =', mpsr
print ' Companion mass =', mc
print ' PSR period (s) =', psr.p
print ' PSR frequency (hz) =', 1.0/psr.p
if ctype=='WD':
numjobs = 3
else:
numjobs = 5
else:
numjobs = 1
# Begin the loop over the candidates
widths = []
for i in range(numloops):
# Generate the fake pulsar parameters
if myid==0:
psr = fake_mspsr(companion = ctype)
psrlist = psrparams_to_list(psr)
else:
psr = presto.psrparams()
psrlist = None
if parallel:
psrlist = bcast_general(psrlist, myid, 0)
if myid==0: psrlist = psrparams_to_list(psr)
else: psr = psrparams_from_list(psrlist)
if debugout:
allproc_print(numprocs, 'Psr period =', psr.p)
print ''
print 'Trial', i
if debugout:
print ''
print ' PSR mass =', mpsr
print ' Companion mass =', mc
print ' PSR period (s) =', psr.p
print ' PSR frequency (hz) =', 1.0/psr.p
def fake_mspsr(companion='None',
psrp=None,
orbp=None,
orbx=None,
orbe=None,
orbw=None,
orbt=None):
"""
fake_mspsr(companion='None'):
Generate random pulsar parameters.
Returns a psrparams structure.
Keyword Arguments:
companion -- the companion type ('WD', 'NS', 'BH', default = None)
Note: All of the following default to random values.
psrp -- pulsar period in sec.
orbp -- orbital period in sec.
orbx -- projected orbital semi-major axis in lt-sec.
orbe -- orbital eccentricity.
orbw -- argument of periapsis in degrees.
orbt -- time since last periapsis passage in sec.
"""
global mpsr, mc, mwd, mns, mbh
psr = presto.psrparams()
psr.jname = 'Fake PSR'
psr.bname = 'Fake PSR'
psr.ntype = 0
psr.ra2000 = 0.0
psr.dec2000 = 0.0
psr.dm = 0.0
psr.dist = 0.0
psr.pd = 0.0
psr.pdd = 0.0
psr.fd = 0.0
psr.fdd = 0.0
if not psrp: psr.p = random.uniform(0.002, 0.07)
else: psr.p = psrp
if psr.p < 0.03: psr.ntype = psr.ntype | 16
psr.f = 1.0 / psr.p
psr.fwhm = random.uniform(0.05, 0.5) * psr.p * 1000.0
psr.timepoch = 0.0
if companion == 'WD':
mwd = random.gauss(0.25, 0.10)
mc = mwd
if not orbe: psr.orb.e = random.expovariate(80.0)
else: psr.orb.e = orbe
ctype = 'WD'
psr.ntype = psr.ntype | 8
elif companion == 'NS':
mns = random.gauss(1.35, 0.04)
mc = mns
if not orbe: psr.orb.e = abs(random.uniform(0.1, 0.8))
else: psr.orb.e = orbe
ctype = 'NS'
psr.ntype = psr.ntype | 8
elif companion == 'BH':
mbh = random.gauss(6.0, 1.0)
mc = mbh
if not orbe: psr.orb.e = abs(random.uniform(0.1, 0.8))
else: psr.orb.e = orbe
ctype = 'BH'
psr.ntype = psr.ntype | 8
else:
psr.orb.p = 0.0
psr.orb.x = 0.0
psr.orb.e = 0.0
psr.orb.w = 0.0
psr.orb.t = 0.0
psr.orb.pd = 0.0
psr.orb.wd = 0.0
mc = 0.0
ctype = 'None'
if ctype != 'None':
# The following is from Thorsett and Chakrabarty, 1988.
mpsr = random.gauss(1.35, 0.04)
inc = math.acos(random.uniform(0.0, 1.0))
mf = (mc * math.sin(inc))**3 / (mc + mpsr)**2
if not orbp: psr.orb.p = random.uniform(20.0, 600.0) * 60.0
else: psr.orb.p = orbp
if not orbx:
psr.orb.x = (mf * psr.orb.p**2 * 1.24764143192e-07)**(1.0 / 3.0)
else:
psr.orb.x = orbx
if not orbw: psr.orb.w = random.uniform(0.0, 360.0)
else: psr.orb.w = orbw
if not orbt: psr.orb.t = random.uniform(0.0, psr.orb.p)
else: psr.orb.t = orbt
return psr
def fake_mspsr(companion='None', psrp=None, orbp=None,
orbx=None, orbe=None, orbw=None, orbt=None):
"""
fake_mspsr(companion='None'):
Generate random pulsar parameters.
Returns a psrparams structure.
Keyword Arguments:
companion -- the companion type ('WD', 'NS', 'BH', default = None)
Note: All of the following default to random values.
psrp -- pulsar period in sec.
orbp -- orbital period in sec.
orbx -- projected orbital semi-major axis in lt-sec.
orbe -- orbital eccentricity.
orbw -- argument of periapsis in degrees.
orbt -- time since last periapsis passage in sec.
"""
global mpsr, mc, mwd, mns, mbh
psr = presto.psrparams()
psr.jname = 'Fake PSR'
psr.bname = 'Fake PSR'
psr.ntype = 0; psr.ra2000 = 0.0; psr.dec2000 = 0.0
psr.dm = 0.0; psr.dist = 0.0
psr.pd = 0.0; psr.pdd = 0.0
psr.fd = 0.0; psr.fdd = 0.0
if not psrp: psr.p = random.uniform(0.002, 0.07)
else: psr.p = psrp
if psr.p < 0.03: psr.ntype = psr.ntype | 16
psr.f = 1.0 / psr.p
psr.fwhm = random.uniform(0.05, 0.5) * psr.p * 1000.0
psr.timepoch = 0.0
if companion=='WD':
mwd = random.gauss(0.25, 0.10)
mc = mwd;
if not orbe: psr.orb.e = random.expovariate(80.0)
else: psr.orb.e = orbe
ctype = 'WD'
psr.ntype = psr.ntype | 8
elif companion=='NS':
mns = random.gauss(1.35, 0.04)
mc = mns;
if not orbe: psr.orb.e = abs(random.uniform(0.1, 0.8))
else: psr.orb.e = orbe
ctype = 'NS'
psr.ntype = psr.ntype | 8
elif companion=='BH':
mbh = random.gauss(6.0, 1.0)
mc = mbh;
if not orbe: psr.orb.e = abs(random.uniform(0.1, 0.8))
else: psr.orb.e = orbe
ctype = 'BH'
psr.ntype = psr.ntype | 8
else:
psr.orb.p = 0.0; psr.orb.x = 0.0; psr.orb.e = 0.0;
psr.orb.w = 0.0; psr.orb.t = 0.0; psr.orb.pd = 0.0;
psr.orb.wd = 0.0;
mc = 0.0; ctype = 'None'
if ctype!='None':
# The following is from Thorsett and Chakrabarty, 1988.
mpsr = random.gauss(1.35, 0.04)
inc = math.acos(random.uniform(0.0, 1.0))
mf = (mc * math.sin(inc))**3 / (mc + mpsr)**2
if not orbp: psr.orb.p = random.uniform(20.0, 600.0) * 60.0
else: psr.orb.p = orbp
if not orbx: psr.orb.x = (mf * psr.orb.p**2
* 1.24764143192e-07)**(1.0 / 3.0)
else: psr.orb.x = orbx
if not orbw: psr.orb.w = random.uniform(0.0, 360.0)
else: psr.orb.w = orbw
if not orbt: psr.orb.t = random.uniform(0.0, psr.orb.p)
else: psr.orb.t = orbt
return psr
