Radiation Spectra of Advection Dominated Accretion Flows Around Kerr Black Holes

• Autorzy: Kurpiewski A. , Jaroszyński M.
• Języki publikacji: EN

Abstrakty

EN

We study the formation of the spectra in advection dominated accretion flows (ADAFs) around Kerr black holes. We use a Monte Carlo approach and fully general relativistic treatment to follow the paths of individual photons and model their scattering with mildly relativistic, thermal electrons of the two temperature plasma present in the flow. We study the influence of the accretion rate, black hole mass, black hole angular momentum, and the strength of the small scale magnetic field present in the plasma on the resulting spectra. The impact of the black hole angular momentum on the spectra is present and can be distinguished from the influence of changes in other parameters. This property of the models should be taken into account when modeling the individual sources and the population of inefficiently accreting black holes in the Universe.

Słowa kluczowe

EN

black hole physics; accretion; accretion disks; radiation mechanisms: thermal

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2000
• Tom: Vol. 50, No. 1
• Strony: 79--91
• Opis fizyczny: Bibliogr. 23 poz., tab., wykr.

Twórcy

autor

Kurpiewski A.

• Warsaw University Observatory, Al. Ujazdowskie 4,00-478 Warszawa

autor

Jaroszyński M.

• Warsaw University Observatory, Al. Ujazdowskie 4,00-478 Warszawa

Bibliografia

• Abramowicz, M.A., Chen, X., Granath, M., and Lasota, J.-P. 1996, Astrophys. J., 471, 762.
• Abramowicz, M.A., Lanza A., and Percival M.J. 1997, Astrophys. J., 479, 179.
• Abramowicz, M.A., Lasota, J.-P., and Igumenshchev, I.V. 2000, astro-ph/0001479.
• Bardeen, J.M. 1973, in: "Black Holes", Eds. C. DeWitt and B.S. DeWitt (Gordon and Breach, New York), p. 215.
• Blandford, R.D., and Begelman, M.C. 1999, MNRAS, 303, L1.
• Gammie, C.F., and Popham, R.G. 1998, Astrophys. J., 498, 313.
• Jaroszyński, M., and Kurpiewski, A. 1997, Astron. Astrophys., 326, 419 (Paper I).
• Kato, S., Fukue, J., and Mineshige, S. 1998, "Black Hole Accretion Disks", (Kyoto University Press, Kyoto).
• Kurpiewski, A., and Jaroszyński, M. 1999, Astron. Astrophys., 346, 713 (Paper II).
• Lasota, J.-P. 1994, in: "Theory of the Accretion Disks 2". Eds. W.J. Duschl, J. Frank, F. Meyer, E.Meyer-Hoffmeister and W.M. Tscharnuter (Kluwer Academic Publishers, Dordrecht), p. 341.
• Lasota, J.-P. 1999, Phys. Reports, 311, 247.
• Nakamura, K.E., Kusunose, M., Matsumoto, R., and Kato, S. 1997, P.A.S.J., 49, 503.
• Narayan, R., and Yi, I. 1994, Astrophys. J. Letters, 428, L13.
• Narayan, R., and Yi, I. 1995, Astrophys. J., 444, 231.
• Narayan, R., Mahadevan, R., Grindlay, J.E., Popham, R.G., and Gammie, Ch. 1998, Astrophys. J., 492, 554 (NMGPG).
• Narayan, R., Mahadevan, R., and Quataert, E. 1998, in: "The Theory of Black Hole Accretion Disks", Eds. M.A. Abramowicz, G. Björnsson and J. Pringle (Cambridge University Press, Cambridge).
• Paczyński, B. 1998, Acta Astron., 48, 667.
• Park, M.-G., and Ostriker, J.P. 1999, Astrophys. J., 527, 247.
• Park, M.-G., and Ostriker, J.P. 2000, astro-ph/0001446.
• Peitz, J., and Appl, S. 1997, MNRAS, 286, 681.
• Popham, R.G., and Gammie, C.F. 1998, Astrophys. J., 504, 419.
• Svensson, R. 1998, in: "Theory of Black Hole Accretion Disks", Eds. M.A. Abramowicz, G. Björnson and J.E. Pringle (Cambridge University Press).
• Yi, I. 1999, in: "Astrophysical Discs", ASP Conf. Series 160, astro-ph/9905215.