redback.transient_models.afterglow_models.alternativepowerlaw_redback_refreshed
- redback.transient_models.afterglow_models.alternativepowerlaw_redback_refreshed(time, redshift, thv, loge0, thc, thj, g1, et, s1, logn0, p, logepse, logepsb, g0, xiN, **kwargs)[source]
An alternative refreshed powerlaw structured jet implemented directly in redback. Profile follows (theta/thc^2)^0.5^(-s or -a). Based on Lamb et al. 2019. Look at the RedbackAfterglowRefreshed class for more details/implementation.
- Parameters:
time – time in days
redshift – source redshift
thv – observer viewing angle in radians
loge0 – jet energy in log_{10} ergs
thc – jet core size in radians
thj – jet edge in radians (thc < thj < pi/2)
g1 – Lorentz factor of shell at start of energy injection. 2 <= g1 < g0
et – factor by which total kinetic energy is larger
s1 – index for energy injection; typically between 0–10, some higher values, ~<30, are supported for some structures. Values of ~10 are consistent with a discrete shock interaction, see Lamb, Levan & Tanvir 2020
logn0 – ism number density in log_{10} cm^-3 or log_{10} A* for wind-like density profile
p – electron power law index
logepse – partition fraction in electrons
logepsb – partition fraction in magnetic field
g0 – initial lorentz factor
xiN – fraction of electrons that get accelerated. Defaults to 1.
kwargs – additional keyword arguments
res – resolution - set dynamically based on afterglow properties by default, but can be set manually to a specific number.
steps – number of steps used to resolve Gamma and dm. Defaults to 250 but can be set manually.
k – power law index of density profile. Defaults to 0 for constant density. Can be set to 2 for wind-like density profile.
expansion – 0 or 1 to dictate whether to include expansion effects. Defaults to 1
ss – Index of energy outside core. Defaults to 3
aa – Index of Lorentz factor outside the core. Defaults to 3
output_format – Whether to output flux density or AB mag
frequency – frequency in Hz for the flux density calculation
cosmology – Cosmology to use for luminosity distance calculation. Defaults to Planck18. Must be a astropy.cosmology object.
- Returns:
flux density or AB mag. Note this is going to give the monochromatic magnitude at the effective frequency for the band. For a proper calculation of the magntitude use the sed variant models.