def get_4piconv(self, ch, theta, phi, psi, horn_pointing=False):
l.info('Computing dipole temperature with 4pi convolver')
vel = qarray.amplitude(self.satellite_v).flatten()
beta = vel / physcon.c
gamma = 1./np.sqrt(1-beta**2)
unit_vel = self.satellite_v/vel[:,None]
if horn_pointing: # psi comes from the S channel, so there is no need
# to remove psi_pol
psi_nopol = psi
else:
# remove psi_pol
psi_nopol = psi - np.radians(ch.get_instrument_db_field("psi_pol"))
# rotate vel to ecliptic
# phi around z
#ecl_rotation = qarray.rotation([0,0,1], -phi)
# theta around y
ecl_rotation = qarray.norm( qarray.mult(
qarray.rotation([0,0,1], -psi_nopol) ,
qarray.mult(
qarray.rotation([0,1,0], -theta) ,
qarray.rotation([0,0,1], -phi)
)
))
# psi around z
#ecl_rotation = qarray.mult(qarray.rotation([0,0,1], -psi) , ecl_rotation)
# vel in beam ref frame
vel_rad = qarray.rotate(ecl_rotation, unit_vel)
cosdir = qarray.arraylist_dot(vel_rad, self.beam_sum[ch.tag]).flatten()
#return beta * cosdir * T_CMB
return (1. / ( gamma * (1 - beta * cosdir ) ) - 1) * T_CMB
def get(self, ch, vec, maximum=False):
l.info('Computing dipole temperature')
#T_dipole_CMB = doppler_factor(qarray.arraylist_dot(self.satellite_v,vec).flatten()) * T_CMB
vel = qarray.amplitude(self.satellite_v).flatten()
beta = vel / physcon.c
gamma=1/np.sqrt(1-beta**2)
if maximum:
cosdir = 1
else:
cosdir = qarray.arraylist_dot(qarray.norm(self.satellite_v), vec).flatten()
T_dipole_CMB = T_CMB / (gamma * ( 1 - beta * cosdir ))
#T_dipole_CMB = T_CMB * (1 - beta * cosdir )
if self.K_CMB:
return T_dipole_CMB - T_CMB
else:
T_dipole_RJ = ch.Planck_to_RJ( T_dipole_CMB ) - ch.Planck_to_RJ(T_CMB)
return T_dipole_RJ
