TY - JOUR
T1 - Accretion of matter and spectra of binary X-ray sources in massive gravity
AU - Panotopoulos, Grigoris
AU - Rincón, Ángel
AU - Lopes, Ilídio
N1 - Funding Information:
The authors G. P. and I. L. thank the Fundação para a Ciência e Tecnologia (FCT), Portugal , for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Instituto Superior Técnico, Universidade de Lisboa, through the Project No. UIDB/00099/2020 and grant No. PTDC/FIS-AST/28920/2017 . The author A. R. acknowledges Universidad de Tarapacá, Chile for financial support.
Funding Information:
The authors G. P. and I. L. thank the Funda??o para a Ci?ncia e Tecnologia (FCT), Portugal, for the financial support to the Center for Astrophysics and Gravitation-CENTRA, Instituto Superior T?cnico, Universidade de Lisboa, through the Project No. UIDB/00099/2020 and grant No. PTDC/FIS-AST/28920/2017. The author A. R. acknowledges Universidad de Tarapac?, Chile for financial support.
Publisher Copyright:
© 2021 Elsevier Inc.
PY - 2021/10
Y1 - 2021/10
N2 - We study low-mass binary X-ray sources involving stellar mass black holes within massive gravity. Regarding the accretion disk, we adopt the standard model for an optically thick, cool, and geometrically thin disk by Shakura–Sunyaev. For the gravitational field generated by the black hole, we consider the analogue of the Schwarzschild–de Sitter space–time of Einstein's theory in massive gravity, for which we found an additional term linear in the radial coordinate. Then, we compute the radial velocity, the energy density and the pressure as a function of the radial coordinate, and the X-ray emission's soft spectral component expected from the disk. We also investigated in detail the impact of this new geometry. Our result indicates that by using observed spectra from confirmed X-ray binaries involving astrophysical black holes, we can put strong constraints on alternative theories of gravity.
AB - We study low-mass binary X-ray sources involving stellar mass black holes within massive gravity. Regarding the accretion disk, we adopt the standard model for an optically thick, cool, and geometrically thin disk by Shakura–Sunyaev. For the gravitational field generated by the black hole, we consider the analogue of the Schwarzschild–de Sitter space–time of Einstein's theory in massive gravity, for which we found an additional term linear in the radial coordinate. Then, we compute the radial velocity, the energy density and the pressure as a function of the radial coordinate, and the X-ray emission's soft spectral component expected from the disk. We also investigated in detail the impact of this new geometry. Our result indicates that by using observed spectra from confirmed X-ray binaries involving astrophysical black holes, we can put strong constraints on alternative theories of gravity.
KW - Accretion disk model
KW - Alternative theory of gravity
KW - Black hole
KW - General relativity
KW - Low mass binary
KW - Massive gravity
UR - http://www.scopus.com/inward/record.url?scp=85115188492&partnerID=8YFLogxK
U2 - 10.1016/j.aop.2021.168596
DO - 10.1016/j.aop.2021.168596
M3 - Article
AN - SCOPUS:85115188492
VL - 433
JO - Annals of Physics
JF - Annals of Physics
SN - 0003-4916
M1 - 168596
ER -