Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Shmuel Balberg"'
Publikováno v:
The Astrophysical Journal Letters, Vol 974, Iss 1, p L22 (2024)
High-velocity stellar collisions near supermassive black holes may result in a complete disruption of the stars. The initial disruption can have energies on par with supernovae and power a very fast transient. In this work, we examine the primary fla
Externí odkaz:
https://doaj.org/article/bc26d9c4c6d54b4784cd6e4d81816aea
Autor:
Shmuel Balberg
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 150 (2024)
The centers of galaxies host a supermassive black hole (SMBH) surrounded by a dense stellar cluster. The cluster is expected to develop mass segregation, in which gravitational scatterings among the stars cause heavier objects to sink closer to the c
Externí odkaz:
https://doaj.org/article/3c2e3e66813d4b939e5941a5ce2e2d2d
Autor:
Shmuel Balberg, Gilad Yassur
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 2, p 149 (2023)
The centers of galaxies host both a supermassive black hole and a dense stellar cluster. Such an environment should lead to stellar collisions, possibly at very high velocities so that the total energy involved is of the same order as supernova explo
Externí odkaz:
https://doaj.org/article/d263b773a41c47dbbf313f5f2f4fc9fd
We consider the solutions of the Guderley problem, consisting of an imploding strong shock wave in an ideal gas with a power law initial density profile. The self-similar solutions, and, specifically, the similarity exponent that determines the behav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cc517ab08b4167538bf2fda2f4e7fe0
http://arxiv.org/abs/2106.04971
http://arxiv.org/abs/2106.04971
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters
When a binary star system is tidally disrupted by a supermassive black hole at a galactic nucleus, one star is ejected at a high speed while the other remains in a tightly bound orbit around the black hole. The cluster of tightly bound stars builds o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58ef27fa4fa7dfeec795729e89d68b03
https://doi.org/10.1093/mnrasl/slt071
https://doi.org/10.1093/mnrasl/slt071
Autor:
Abraham Loeb, Shmuel Balberg
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 414:1715-1720
The breakout of a supernova shock wave through the progenitor star's outer envelope is expected to appear as an X-ray flash. However, if the supernova explodes inside an optically-thick wind, the breakout flash is delayed. We present a simple model f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ee036e2ffd27e7de0ee305b8c4d1891
https://doi.org/10.1111/j.1365-2966.2011.18505.x
https://doi.org/10.1111/j.1365-2966.2011.18505.x
Galaxy evolution depends strongly on the physics of the interstellar medium (ISM). Motivated by the need to incorporate the properties of the ISM in cosmological simulations we construct a simple method to include the contribution of non-thermal comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04daf6b12369411af74b210c7224b978
https://doi.org/10.5167/uzh-121892
https://doi.org/10.5167/uzh-121892
Autor:
Shmuel Balberg, Luca Zampieri, Stuart L. Shapiro, Massimo Turatto, S. Benetti, K. Nomoto, Paolo A. Mazzali, Enrico Cappellaro, T. Nakamura, Ferdinando Patat
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 322:361-368
We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400 days after the explosion. These observations confirm the peculiar properties of SN 1997D, such as the very low abundance of 56Co (0.002 Msol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::134de693c4e3a8c6bc1699f38890330c
https://doi.org/10.1046/j.1365-8711.2001.04122.x
https://doi.org/10.1046/j.1365-8711.2001.04122.x
Publikováno v:
The Astrophysical Journal. 548:L179-L182
If a light gluino exists, the lightest gluino-containing baryon, the \OSO, is a possible candidate for self-interacting dark matter. In this scenario, the simplest explanation for the observed ratio $\Omega_{dm}/\Omega_b \approx 6-10$ is that $m_{S^0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea1772f90f0dabfe2527d17af701b605
https://doi.org/10.1086/319101
https://doi.org/10.1086/319101
Publikováno v:
The Astrophysical Journal Supplement Series. 121:515-531
We examine the roles the presence of hyperons in the cores of neutron stars may play in determining global properties of these stars. The study is based on estimates that hyperons appear in neutron star matter at about twice the nuclear saturation de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37c95cf8c8e2cb30e825b95db5275337
https://doi.org/10.1086/313196
https://doi.org/10.1086/313196