def inRegion(self, pulsar):
"""Test if pulsar is inside region bounded by survey."""
# check if l, b are outside region first of all
# print pulsar.gl, pulsar.gb, self.GLmax, self.GLmin
if pulsar.gl > 180.:
pulsar.gl -= 360.
if pulsar.gl > self.GLmax or pulsar.gl < self.GLmin:
return False
if math.fabs(pulsar.gb) > self.GBmax \
or math.fabs(pulsar.gb) < self.GBmin:
return False
# need to compute ra/dec of pulsar from the l and b (galtfeq)
ra, dec = go.lb_to_radec(pulsar.gl, pulsar.gb)
# are ra, dec outside region?
if ra > self.RAmax or ra < self.RAmin:
return False
if dec > self.DECmax or dec < self.DECmin:
return False
# randomly decide if pulsar is in completed area of survey
if random.random() > self.coverage:
return False
return True
def inRegion(self, pulsar):
"""Test if pulsar is inside region bounded by survey."""
# check if l, b are outside region first of all
# print pulsar.gl, pulsar.gb, self.GLmax, self.GLmin
if pulsar.gl > 180.:
pulsar.gl -= 360.
if pulsar.gl > self.GLmax or pulsar.gl < self.GLmin:
return False
if math.fabs(pulsar.gb) > self.GBmax \
or math.fabs(pulsar.gb) < self.GBmin:
return False
# need to compute ra/dec of pulsar from the l and b (galtfeq)
ra, dec = go.lb_to_radec(pulsar.gl, pulsar.gb)
# are ra, dec outside region?
if ra > self.RAmax or ra < self.RAmin:
return False
if dec > self.DECmax or dec < self.DECmin:
return False
# randomly decide if pulsar is in completed area of survey
if random.random() > self.coverage:
return False
return True
def calc_gain(pulsar):
ra, dec = go.lb_to_radec(pulsar.gl, pulsar.gb)
dec_chime = 49.31
diff = dec - 49.31
G_0 = np.abs(1.44 * np.cos(np.radians(diff)))
return G_0
def _AA_factor(self, pulsar):
""" Aperture array factor """
# need to compute ra/dec of pulsar from the l and b (galtfeq)
ra, dec = go.lb_to_radec(pulsar.gl, pulsar.gb)
offset_from_zenith = dec - (self.DECmax + self.DECmin) / 2.0
return math.cos(math.radians(offset_from_zenith))
def _AA_factor(self, pulsar):
""" Aperture array factor """
# need to compute ra/dec of pulsar from the l and b (galtfeq)
ra, dec = go.lb_to_radec(pulsar.gl, pulsar.gb)
offset_from_zenith = dec - (self.DECmax + self.DECmin)/2.0
return math.cos(math.radians(offset_from_zenith))
def calc_tobs(pulsar):
ra, dec = go.lb_to_radec(pulsar.gl, pulsar.gb)
t_obs = 60 * np.abs(10 / np.cos(np.radians(dec)))
#stacked searching
#t_obs = 365*60*np.abs(10/np.cos(np.radians(dec)))
return t_obs
