Neutrino radiation of the AGN black holes

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• 作者：G. Ter-Kazarian ; S. Shidhani and L. Sargsyan
• 关键词：Black hole physics—accretion ; Accretion discs—galaxies ; active—quasars ; general—mass—luminosity relation ; neutrinos
• 刊名：Astrophysics and Space Science
• 出版年：2007
• 出版时间：July, 2007
• 年：2007
• 卷：310
• 期：1-2
• 页码：93-110
• 全文大小：654 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Astronomy
  
• 出版者：Springer Netherlands
• ISSN：1572-946X

文摘

In the framework of ‘microscopic’ theory of black holes (J. Phys. Soc. Jpn. Suppl. B 70, 84, 2001; Astrophys. USSR 4, 659, 1996; 35, 335, 1991, 33, 143, 1990, 31, 345, 1989a; Astrophys. Space Sci. 1, 1992; Dokl. Akad. Nauk USSR 309, 97, 1989b), and references therein, we address the ‘pre-radiation time’ (PRT) of neutrinos from black holes, which implies the lapse of time from black hole’s birth till radiation of an extremely high energy neutrinos. For post-PRT lifetime, the black hole no longer holds as a region of spacetime that cannot communicate with the external universe. We study main features of spherical accretion onto central BH and infer a mass accretion rate onto it, and, further, calculate the resulting PRT versus bolometric luminosity due to accretion onto black hole. We estimate the PRTs of AGN black holes, with the well-determined masses and bolometric luminosities, collected from the literature by Woo Jong-Hak and Urry (Astrophys. J. 579, 530, 2002) on which this paper is partially based. The simulations for the black holes of masses M _BH ?(1.1?106 ÷4.2?109)?M _⊙ give the values of PRTs varying in the range of about T _BH ?(4.3?105 ÷5.6?1011) yr. The derived PRTs for the 60 AGN black holes are longer than the age of the universe (～13.7 Gyr) favored today. At present, some of remaining 174 BHs may radiate neutrinos. However, these results would be underestimated if the reservoir of gas for accretion in the galaxy center is quite modest, and no obvious way to feed the BHs with substantial accretion.