English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We compute the effects of thermal Comptonization of soft photons emitted froma Kep- lerian disk around a black hole by the post-shock region of asub-Keplerian flow, known as the CENtrifugal pressure dominated BOundary Layer(CENBOL). We show that the spectral state transitions of black hole candidatescould be explained either by varying the outer boundary of the CENBOL, whichalso happens to be the inner edge of the Keplerian disk, or by changing thecentral density of the CENBOL which is governed by the rate of thesub-Keplerian flow. We confirm the conclusions of the previous the- oreticalstudies that the interplay between the intensity of the soft photons emitted bythe Keplerian flow and the optical depth and electron temperature of theComptonizing cloud is responsible for the state transitions in a black hole.

Monte-Carlo Simulations of Thermal Comptonization Process in a Two Component Accretion Flow Around a Black Hole