Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Omer Bromberg"'
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 308 (2024)
Gamma-ray bursts (GRBs) are powered by ultrarelativistic jets. The launching sites of these jets are surrounded by dense media, which the jets must cross before they can accelerate and release high-energy emission. Interaction with the medium leads t
Externí odkaz:
https://doaj.org/article/543a615cfd964d65a8221a131cefeda8
Autor:
Aretaios Lalakos, Alexander Tchekhovskoy, Omer Bromberg, Ore Gottlieb, Jonatan Jacquemin-Ide, Matthew Liska, Haocheng Zhang
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 79 (2024)
Spinning supermassive black holes (BHs) in active galactic nuclei magnetically launch relativistic collimated outflows, or jets. Without angular momentum supply, such jets are thought to perish within 3 orders of magnitude in distance from the BH, we
Externí odkaz:
https://doaj.org/article/6c09aea41b214fa6a8150dac1eea857b
Autor:
Pavel Abolmasov, Omer Bromberg
Both the dynamics and the observational properties of relativistic jets are determined by their interaction with the ambient medium. A crucial role is played by the contact discontinuity at the jet boundary, which in the presence of jet collimation m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c26716b69c45e77cfd04f374c847c12
http://arxiv.org/abs/2210.11178
http://arxiv.org/abs/2210.11178
Autor:
Ore Gottlieb, Matthew Liska, Alexander Tchekhovskoy, Omer Bromberg, Aretaios Lalakos, Dimitrios Giannios, Philipp Mösta
Publikováno v:
Astrophysical Journal Letters, 933(1):L9. IOP Publishing Ltd.
Long-duration $\gamma$-ray bursts (GRBs) accompany the collapse of massive stars and carry information about the central engine. However, no 3D models have been able to follow these jets from their birth by a black-hole (BH) to the photosphere. We pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::027853107f93e29ab8849fb5a71aae8d
https://doi.org/10.3847/2041-8213/ac7530
https://doi.org/10.3847/2041-8213/ac7530
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Gamma-ray bursts (GRBs) are powered by relativistic jets that exhibit intermittency over a broad range of time-scales – from ∼ ms to seconds. Previous numerical studies have shown that hydrodynamic (i.e. unmagnetized) jets that are expelled from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1264a2e543457c9051fbc67c92bf4abe
https://doi.org/10.1093/mnras/stab1068
https://doi.org/10.1093/mnras/stab1068
Publikováno v:
Monthly Notices of the Royal Astronomical Society
The interaction of gamma-ray burst (GRB) jets with the dense media into which they are launched promote the growth of local hydrodynamic instabilities along the jet boundary. In a companion paper, we study the evolution of hydrodynamic (unmagnetized)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a8a700abf82f12ed44217128d680509
https://doi.org/10.1093/mnras/staa2567
https://doi.org/10.1093/mnras/staa2567
Publikováno v:
Astrophysical Journal Letters, 896, 2, pp. 1-7
Astrophysical Journal Letters, 896, 1-7
Astrophysical Journal Letters, 896, 1-7
Magnetized jets in GRBs and AGNs are thought to be efficient accelerators of particles, however, the process responsible for the acceleration is still a matter of active debate. In this work, we study the kink-instability in non-rotating force-free j
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7daa26d69fe5e0323526746b2872282f
https://doi.org/10.3847/2041-8213/ab95a2
https://doi.org/10.3847/2041-8213/ab95a2
We present a suite of the first 3D GRMHD collapsar simulations, which extend from the self-consistent jet launching by an accreting Kerr black hole (BH) to the breakout from the star. We identify three types of outflows, depending on the angular mome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46e4a388e7cd49a388063084005e8fe1
http://arxiv.org/abs/2109.14619
http://arxiv.org/abs/2109.14619
Autor:
Omer Bromberg, Gal Birenbaum
Linear polarization measurements in the optical band show polarization degrees of a few percent at late times. Recently, polarization at sub-percent level was also detected in radio by ALMA, opening the window for multi-wavelength polarimetry and str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42e56cb580764d3e51aa1b10297086f3
We have performed a series of numerical experiments aimed at studying the activation of Kerr black holes (BHs) by advection of small scale magnetic fields. Such configurations may potentially give rise to the formation of quasi-striped Blandford-Znaj
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdd7e1843d9bf14d88baf9f9f03c1e9d