Skylight: a new code for general-relativistic ray-tracing and radiative transfer in arbitrary space-times

被引：11

作者：

Pelle, Joaquin ^{[1
,2
]}

Reula, Oscar ^{[1
,2
]}

Carrasco, Federico ^{[1
,2
,3
]}

Bederian, Carlos ^{[1
,2
]}

机构：

[1] Univ Nacl Cordoba, Fac Matemat Astron Fis & Computac, Cordoba, Argentina

[2] Consejo Nacl Invest Cient & Tecn, Inst Fis Enrique Gaviola, RA-5000 Cordoba, Argentina

[3] Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-14476 Potsdam, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 515卷 / 01期

关键词：

black hole physics; gravitation; radiative transfer; methods: numerical; M87 EVENT HORIZON; MONTE-CARLO CODE; NEUTRON-STAR; BLACK-HOLE; MAGNETIC-FIELD; HOT-SPOTS; EMISSION; TRANSPORT; SCHEME; MODEL;

D O I：

10.1093/mnras/stac1857

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

To reproduce the observed spectra and light curves originated in the neighbourhood of compact objects requires accurate relativistic ray-tracing codes. In this work, we present Skylight, a new numerical code for general-relativistic ray-tracing and radiative transfer in arbitrary space-time geometries and coordinate systems. The code is capable of producing images, spectra, and light curves from astrophysical models of compact objects as seen by distant observers. We incorporate two different schemes, namely Monte Carlo radiative transfer integrating geodesics from the astrophysical region to distant observers, and camera techniques with backwards integration from the observer to the emission region. The code is validated by successfully passing several test cases, among them: thin accretion discs and neutron stars hotspot emission.

引用

页码：1316 / 1327

页数：12

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