Two-blackbody portraits of radiation from magnetized neutron stars

Autor:	Yakovlev, D. G.
Rok vydání:	2021
Předmět:	Astrophysics - High Energy Astrophysical Phenomena
Druh dokumentu:	Working Paper
DOI:	10.1093/mnras/stab2077
Popis:	We study a simple model describing thermal radiation spectra from magnetized neutron stars. The model assumes that a star is nearly spherical and isothermal inside and possesses dipole magnetic fields ($B \lesssim 10^{14}$ G) near the surface, which make the surface temperature distribution non--uniform. We assume further that any surface element emits a blackbody (BB) spectrum with a local effective temperature. We show that such thermal spectra (including phase--resolved) are accurately approximated by simple equivalent two--BB (2BB) models. We introduce and study phase--space maps of 2BB parameters and show that these maps can be useful for interpreting neutron star observations, in which 2BB spectral fits have been done. Comment: 10 pages, 8 figures, MNRAS, accepted
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2107.10761 Zobrazit plný text záznamu View this record from Arxiv