Accretion of matter onto black holes in massive gravity with Lorentz symmetry breaking

Understand

In this paper we study the accretion of matter onto the black holes and the shadow images obtained by an infalling accretion flow of gas in a theory of massive gravity (MG) with a spontaneously breaking Lorentz symmetry.

• This black hole solution is characterized by mass $M$, scalar charge $S$ and the parameter $\lambda$.
• In order to extract the astrophysical results of our analyses, firstly, we have assumed a specific range for the parameter $\lambda$ to constrain the scalar charge $S$ using the EHT result.
• To this end, we have studied the effect of the scalar charge on the intensity of the electromagnetic radiation from the black hole.