# Inclusion of the effect of radiation pressure on the accretion phenomena in astrophysics

## TL;DR

This paper investigates how radiation pressure influences accretion processes in astrophysics, showing that it reduces accretion rates and can cause a transition from standard to advection-dominated accretion flows.

## Contribution

It introduces the effect of radiation pressure into accretion models, highlighting its role in reducing accretion rates and altering disk properties.

## Key findings

- Radiation pressure reduces accretion rates.
- Transition from CDAF to ADAF due to decreased angular velocity.
- Suppression of disk luminosity and temperature.

## Abstract

Studying accretion phenomena is a window into understanding most heavenly bodies, from the birth of stars to Active galactic nuclei(AGN). We would adopt the effect of the radiation pressure which reduces accretion rates M on the accretion phenomena. Shakura-Sunyaev$\alpha$-disk model of disk accretion can be regarded as a good candidate theory of ADAF. Reduction of accreting matter's angular velocity leads to the suppression of the disk luminosity and the surface temperature which essentially implies the transition of the standard accretion disk model from CDAF to ADAF.