Accretions on Black Holes and Interpretation of Observed Data
Prof. Sandip Chakrabarti
Prof. Sandip Chakrabarti
Summary:
We study the general relativistic flow around a black hole and show that
all the flows are necessarily transonic. The possibility of the formation of standing, oscillating and propagating shock waves in the flow which are dynamically important are discussed using analytical method and numerical simulations. Their effects on the radiative properties of the flow are studied. By comparing with observational results, it appears that the observed spectral and timing properties are a direct consequence of a combination of a shocked flow and a standard Keplerian disk both of which are supersonic near the horizon. We also compare and contrast the global solutions on a neutron star.
20 lectures of 1 hour duration in two weeks
(Two lectures each day for five days a week)
(Two lectures each day for five days a week)
Some references:
(a) S.K. Chakrabarti, Theory of Transonic Astrophysical Flows, World Scientific, Singapore (1990)
(b) S.K. Chakrabarti, Accretion Processes on Black Holes, Physics Reports, v. 266, No 5 & 6, pp 229-392 (1996a); S.K. Chakrabarti, ApJ, 464, 664, (1996b); S.K. Chakrabarti, MNRAS, 283, 325 (1996c)
(c) S.K. Chakrabarti, ApJ, 484, 313, (1997)
(d) S.K. Chakrabarti & S. Das, MNRAS, 327, 808 (2001); S.K. Chakrabarti, Astrophys & Sp. Sc., 276, 191 (2001)
(e) S.K. Chakrabarti, Study of Accretion Processes on Black Holes: Fifty Years of Development, in Frontiers in Astrophysics, 75th Commemorative Volume of Indian Journal of Physics, Allied Publishers (2001)
(f) S.K. Chakrabarti et al., Astron. Astrophys., 421, 1 (2004)
(g) S.K. Chakrabarti & S. Mandal, ApJ, 642, L49 (2006)
(h) Reviews In AIP Publications By SKC: In Publications No. 745, 1053, 1206.
(a) S.K. Chakrabarti, Theory of Transonic Astrophysical Flows, World Scientific, Singapore (1990)
(b) S.K. Chakrabarti, Accretion Processes on Black Holes, Physics Reports, v. 266, No 5 & 6, pp 229-392 (1996a); S.K. Chakrabarti, ApJ, 464, 664, (1996b); S.K. Chakrabarti, MNRAS, 283, 325 (1996c)
(c) S.K. Chakrabarti, ApJ, 484, 313, (1997)
(d) S.K. Chakrabarti & S. Das, MNRAS, 327, 808 (2001); S.K. Chakrabarti, Astrophys & Sp. Sc., 276, 191 (2001)
(e) S.K. Chakrabarti, Study of Accretion Processes on Black Holes: Fifty Years of Development, in Frontiers in Astrophysics, 75th Commemorative Volume of Indian Journal of Physics, Allied Publishers (2001)
(f) S.K. Chakrabarti et al., Astron. Astrophys., 421, 1 (2004)
(g) S.K. Chakrabarti & S. Mandal, ApJ, 642, L49 (2006)
(h) Reviews In AIP Publications By SKC: In Publications No. 745, 1053, 1206.