Results 21 to 30 of about 55,540 (200)

Detectable universes inside regular black holes

European Physical Journal C: Particles and Fields, 2022
While spacetime in the vicinity outside astrophysical black holes is believed to be well understood, the event horizon and the interior remain elusive. Here, we discover a degenerate infinite spectrum of novel general relativity solutions with the same ...
Zacharias Roupas
doaj   +1 more source

The Life and Times of Extremal Black Holes [PDF]

, 2000
Charged extremal black holes cannot fully evaporate through the Hawking effect and are thus long lived. Over their lifetimes, these black holes take part in a variety of astrophysical processes, including many that lead to their eventual destruction ...
Adams, Fred C.
core   +2 more sources

Astrophysical Appearance of Primordial Black Holes

Astronomy Reports, 2023
14 pages, 3 figures, Paper presented at the Fifth Zeldovich meeting, an international conference in honor of Ya. B. Zeldovich held in Yerevan, Armenia on June 12--16, 2023. Submitted to Astronomy Reports by the recommendation of the special editors: R. Ruffini, N. Sahakyan and G.
Postnov, Konstantin, Kuranov, Aleksandre, Mitichkin, Nikita   +2 more
openaire   +2 more sources

Astrophysical black holes

, 2015
Published in 2015 as Chapter 1 of 'General Relativity: The most beautiful of theories: Applications and trends after 100 years', Edited by Carlo Rovelli (pub. De Gruyter)
Fabian, Andrew C., Lasenby, Anthony N.
openaire   +2 more sources

Are astrophysical “black” holes leaky?

International Journal of Modern Physics D, 2022
We continue a study by Adler and Ramazanoǧlu (AR) of “black” holes as modified by a scale invariant dark energy action. For the spherically symmetric Schwarzschild-like case, AR found that there is no event horizon; hence spacetime is not divided by the “black” hole into causally disconnected regions.
openaire   +2 more sources

Black Hole Astrophysics in AdS Braneworlds [PDF]

Journal of High Energy Physics, 2003
We consider astrophysics of large black holes localized on the brane in the infinite Randall-Sundrum model. Using their description in terms of a conformal field theory (CFT) coupled to gravity, deduced in Ref. [1], we show that they undergo a period of rapid decay via Hawking radiation of CFT modes.
Emparan, Roberto, García-Bellido, Juan, Kaloper, Nemanja   +2 more
openaire   +3 more sources

Astrophysical hints for magnetic black holes [PDF]

Physical Review D, 2021
19 pages, 7 figures. Changes in exposition, typos corrected and added references. Published in Phys.
Diptimoy Ghosh, Arun Thalapillil, Farman Ullah   +2 more
openaire   +2 more sources

The Formation and Evolution of the First Massive Black Holes

, 2004
The first massive astrophysical black holes likely formed at high redshifts (z>10) at the centers of low mass (~10^6 Msun) dark matter concentrations.
A Cattaneo, A Cavaliere, A Gould, A Heger, A Jenkins, A Kashlinsky, A Kogut, A Lidz, A Soltan, A Songaila, A Venkatesan, A Wandel, AA Thoul, AC Fabian, AJ Barger, AR King, AR King, AW Graham, B Ciardi, B Ciardi, BJ Carr, CF Gammie, CF Gammie, CJ Willott, CL Bennett, CS Kochanek, D Eisenstein, D Galli, D Lynden-Bell, D Lynden-Bell, D Merritt, D Proga, DC Heggie, DE Berk Van den, DM Alexander, DM Alexander, DN Spergel, DQ Lamb, DR Garnett, E Quataert, EE Salpeter, EJM Colbert, ET Vishniac, F Haardt, F Hoyle, F Palla, F Walter, FA Rasio, G Efstathiou, G Efstathiou, G Kauffmann, G Quinlan, GA Shields, GJ Wasserburg, GL Granato, GM Fuller, GP Holder, GT Richards, H Baumgardt, H Kang, H Kang, H Netzer, H Susa, H Zhao, HM Lee, I Igumenshchev, I Shlosman, J Arons, J Binney, J Comerford, J Goodman, J Magorrian, J Miralda-Escudé, J Silk, J Silk, J Stone, J Tumlinson, J-H Woo, JA Sellwood, JA Tyson, JE Gunn, JF Navarro, JM Shull, JM Stone, JP Ostriker, K Gebhardt, K Gebhardt, K Menou, K Menou, L Ciotti, L Ciotti, L Ferrarese, L Ferrarese, L Ferrarese, L Hui, LL Spitzer Jr, M Dijkstra, M Elvis, M Fukugita, M Kaplinghat, M Milosavljevic, M Saijo, M Shibata, M Tegmark, M Vestergaard, M Vestergaard, M Volonteri, M Zaldarriaga, MC Begelman, MC Begelman, MC Begelman, MC Begelman, MC Begelman, MC Begelman, MG Haehnelt, MG Haehnelt, MG Haehnelt, MG Haehnelt, MJ Kukula, MJ Rees, MJ Rees, NI Shakura, NY Gnedin, NY Gnedin, NY Gnedin, O Blaes, P Hut, P Kaaret, P Madau, P Madau, P Madau, P Madau, P Martini, P Martini, P McDonald, P Monaco, P Salucci, P Valageas, P Väisänen, PA Shaver, PJ Armitage, PR Shapiro, PR Shapiro, Q Yu, Q Yu, R Barkana, R Barkana, R Cen, R Cen, RD Blandford, RD Blandford, RF Mushotzky, RH Becker, RK Islam, RK Sheth, RL White, RP Marel Van der, RP Marel Van der, RP Marel Van der, RV Wagoner, S Croom, S Kaspi, S Lepp, S Wyithe, S Wyithe, S Wyithe, S Wyithe, SA Hughes, SDM White, SE Woosley, SF Portegies Zwart, SL Shapiro, SL Shapiro, SP Oh, SP Oh, SP Oh, SP Oh, SR Heap, T Abel, T Abel, T Abel, T Abel, T Hirasawa, T Kitayama, T Matsuda, T Matteo Di, T Miyaji, T Theuns, TA Small, V Bromm, V Bromm, V Bromm, WC Saslaw, WH Press, X Fan, X Fan, X Fan, X Fan, X Wu, YB Zel’dovich, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman, Z Haiman   +214 more
core   +1 more source

Primordial black holes in braneworld cosmologies: astrophysical constraints [PDF]

, 2003
In two recent papers we explored the modifications to primordial black hole physics when one moves to the simplest braneworld model, Randall--Sundrum type II.
A. Majumdar, A. Peimbert, A.C. Fabian, A.F. Heckler, A.F. Heckler, A.M. Green, Andrew R. Liddle, B.E.J. Pagel, B.J. Carr, B.J. Carr, B.J. Carr, B.J. Carr, B.J. Carr, B.V. Vainer, B.V. Vainer, B.V. Vainer, B.V. Vainer, C. Caso, C.D. Hoyle, C.E. Fichtel, D. Lindley, D. Sauer, D. Tytler, D.H. Weinberg, D.J. Fixsen, D.N. Page, D.N. Page, D.N. Schramm, Dominic Clancy, G. Fiorentini, G. Setti, G. Steigman, G.F. Chapline, I.D. Novikov, J.A. Bernstein, J.H. MacGibbon, J.H. MacGibbon, K. Kohri, K.A. Olive, K.A. Olive, K.A. Olive, L. Randall, M. Peimbert, M.H. Reno, M.J. Bowick, M.Yu. Khlopov, P.D. Nasel’skii, R. Emparan, R. Emparan, R. Gruenwald, R. Guedens, R. Guedens, R.A. Sunyaev, Raf Guedens, S. Miyama, S. Sarkar, S.C. Kappadath, S.M. Viegas, S.W. Hawking, S.W. Hawking, T. Miyaji, T. Rothman, T. Tanaka, V. Schonfelder, Y.I. Izotov, Y.I. Izotov, Y.I. Izotov, Ya.B. Zel’dovich, Ya.B. Zel’dovich, Ya.B. Zel’dovich, Ya.B. Zel’dovich   +70 more
core   +2 more sources

Electric Currents along Astrophysical Jets

Galaxies, 2017
Astrophysical black holes and their surrounding accretion disks are believed to be threaded by grand design helical magnetic fields. There is strong theoretical evidence that the main driver of their winds and jets is the Lorentz force generated by these
Ioannis Contopoulos
doaj   +1 more source