def test_angle_transformation_invariance(mu, r, inv_t_exp):
packet = r_packet.RPacket(r, mu, 0.4, 0.9)
mc.full_relativity = True
mu1 = angle_aberration_CMF_to_LF(packet, 1 / inv_t_exp, mu)
mu_obtained = angle_aberration_LF_to_CMF(packet, 1 / inv_t_exp, mu1)
mc.full_relativity = False
assert_almost_equal(mu_obtained, mu)
def test_both_angle_aberrations_inverse(mu, r, time_explosion):
"""
The angle aberration functions should be the functional inverse of one
another.
"""
nu = 0.4
energy = 0.9
packet = r_packet.RPacket(r, mu, nu, energy)
packet.r = r
obtained_mu = angle_aberration_CMF_to_LF(packet, time_explosion, mu)
inverse_obtained_mu = angle_aberration_LF_to_CMF(packet, time_explosion,
obtained_mu)
assert_almost_equal(inverse_obtained_mu, mu)
def trace_vpacket_volley(r_packet, vpacket_collection, numba_model,
numba_plasma):
"""
Shoot a volley of vpackets (the vpacket collection specifies how many)
from the current position of the rpacket.
Parameters
----------
r_packet : [type]
[description]
vpacket_collection : [type]
[description]
numba_model : [type]
[description]
numba_plasma : [type]
[description]
"""
if (r_packet.nu < vpacket_collection.v_packet_spawn_start_frequency) or (
r_packet.nu > vpacket_collection.v_packet_spawn_end_frequency):
return
no_of_vpackets = vpacket_collection.number_of_vpackets
if no_of_vpackets == 0:
return
### TODO theoretical check for r_packet nu within vpackets bins - is done somewhere else I think
if r_packet.r > numba_model.r_inner[0]: # not on inner_boundary
r_inner_over_r = numba_model.r_inner[0] / r_packet.r
mu_min = -math.sqrt(1 - r_inner_over_r * r_inner_over_r)
v_packet_on_inner_boundary = False
if montecarlo_configuration.full_relativity:
mu_min = angle_aberration_LF_to_CMF(r_packet,
numba_model.time_explosion,
mu_min)
else:
v_packet_on_inner_boundary = True
mu_min = 0.0
mu_bin = (1.0 - mu_min) / no_of_vpackets
r_packet_doppler_factor = get_doppler_factor(r_packet.r, r_packet.mu,
numba_model.time_explosion)
for i in range(no_of_vpackets):
v_packet_mu = mu_min + i * mu_bin + np.random.random() * mu_bin
if v_packet_on_inner_boundary: # The weights are described in K&S 2014
weight = 2 * v_packet_mu / no_of_vpackets
else:
weight = (1 - mu_min) / (2 * no_of_vpackets)
# C code: next line, angle_aberration_CMF_to_LF( & virt_packet, storage);
if montecarlo_configuration.full_relativity:
v_packet_mu = angle_aberration_CMF_to_LF(
r_packet, numba_model.time_explosion, v_packet_mu)
v_packet_doppler_factor = get_doppler_factor(
r_packet.r, v_packet_mu, numba_model.time_explosion)
# transform between r_packet mu and v_packet_mu
doppler_factor_ratio = r_packet_doppler_factor / v_packet_doppler_factor
v_packet_nu = r_packet.nu * doppler_factor_ratio
v_packet_energy = r_packet.energy * weight * doppler_factor_ratio
v_packet = VPacket(
r_packet.r,
v_packet_mu,
v_packet_nu,
v_packet_energy,
r_packet.current_shell_id,
r_packet.next_line_id,
i,
)
tau_vpacket = trace_vpacket(v_packet, numba_model, numba_plasma)
v_packet.energy *= math.exp(-tau_vpacket)
vpacket_collection.set_properties(
v_packet.nu,
v_packet.energy,
r_packet.last_interaction_in_nu,
r_packet.last_interaction_type,
r_packet.last_line_interaction_in_id,
r_packet.last_line_interaction_out_id,
)