Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Yuval Birnboim"'
JWST observations indicate a surprising excess of luminous galaxies at $z\sim 10$ and above, consistent with efficient conversion of the accreted gas into stars, unlike the suppression of star formation by feedback at later times. We show that the hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68d91037d2c0a19dcee0cb7782627653
Autor:
Avishai Dekel, Nir Mandelker, Yuval Birnboim, Frank C. van den Bosch, Han Aung, Daisuke Nagai
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:2415-2427
We present an analytic toy model for the radiation produced by the interaction between the cold streams thought to feed massive halos at high redshift and their hot CGM. We begin by deriving cosmologically motivated parameters for the streams as they
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee659f4af67241e76b5bda29ba9976d9
https://doi.org/10.1093/mnras/staa2421
https://doi.org/10.1093/mnras/staa2421
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 484:1100-1132
We study the effects of Kelvin-Helmholtz instability (KHI) on the cold streams that feed high-redshift galaxies through their hot haloes, generalizing our earlier analyses of a 2D slab to a 3D cylinder, but still limiting our analysis to the adiabati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::459e10333ed4d2f5b24fcf18c09095c6
https://doi.org/10.1093/mnras/stz012
https://doi.org/10.1093/mnras/stz012
Publikováno v:
NASA Astrophysics Data System
Interstellar gas clouds are often both highly magnetized and supersonically turbulent, with velocity dispersions set by a competition between driving and dissipation. This balance has been studied extensively in the context of gases with constant mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f1552ef8a69bf86dd4d628b085d93a8
https://doi.org/10.1093/mnras/stx2426
https://doi.org/10.1093/mnras/stx2426
Autor:
Frank C. van den Bosch, Avishai Dekel, Han Aung, Nir Mandelker, Yuval Birnboim, Daisuke Nagai
We study the effects of Kelvin Helmholtz Instability (KHI) on the cold streams that feed massive halos at high redshift, generalizing our earlier results to include the effects of radiative cooling and heating from a UV background, using analytic mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cb4d5964edcc0985309024cd3734dad
Self-gravitating gaseous filaments exist on many astrophysical scales, from sub-pc filaments in the interstellar medium to Mpc scale streams feeding galaxies from the cosmic web. These filaments are often subject to Kelvin-Helmotz Instability (KHI) d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cbc761a12930d359c7b5879817b50f9
As part of our long-term campaign to understand how cold streams feed massive galaxies at high redshift, we study the Kelvin-Helmholtz instability (KHI) of a supersonic, cold, dense gas stream as it penetrates through a hot, dilute circumgalactic med
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::956957d1da68b3e638202ef5c5a0a4a0
Observations of soft gamma rays emanating from the Milky Way from SPI/\textit{INTEGRAL} reveal the annihilation of $\sim2\times10^{43}$ positrons every second in the Galactic bulge. The origin of these positrons, which annihilate to produce a promine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d1d38d56bc2997fbd2bb8767d98d07b
http://arxiv.org/abs/1710.02613
http://arxiv.org/abs/1710.02613
Autor:
Adriana A. Angulo, Guy Malamud, R. P. Drake, Yuval Birnboim, Carolyn Kuranz, Shane Coffing, Matthew Trantham
Publikováno v:
The Astrophysical Journal Supplement Series. 245:27
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf2c30ef861645a04b7cdd7fcc23f76c
https://doi.org/10.3847/1538-4365/ab4a15
https://doi.org/10.3847/1538-4365/ab4a15
Autor:
Avishai Dekel, Yuval Birnboim
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 415:2566-2579
Many galaxy clusters pose a "cooling-flow problem", where the observed X-ray emission from their cores is not accompanied by enough cold gas or star formation. A continuous energy source is required to balance the cooling rate over the whole core vol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e785ec15ce2348f261c26b9586d32a0
https://doi.org/10.1111/j.1365-2966.2011.18880.x
https://doi.org/10.1111/j.1365-2966.2011.18880.x