Zobrazeno 1 - 10
of 167
pro vyhledávání: '"Biman B. Nath"'
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 26 (2024)
The recent detection of large column density absorption lines from highly ionized gas in a few directions through the circumgalactic medium (CGM) of the Milky Way (MW) has been puzzling. The inferred temperature from these absorption lines far exceed
Externí odkaz:
https://doaj.org/article/a892537d0a564aa9b673f225d867e4c3
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 49 (2024)
The presence of the ≈10 ^6 K gas in the circumgalactic medium of the Milky Way (MW) has been well established. However, the location and the origin of the newly discovered hot gas at “supervirial (SV)” temperatures of ≈10 ^7 K have been puzzl
Externí odkaz:
https://doaj.org/article/d0e0c8b932fe467e9ca869aa5120cdbc
Publikováno v:
Universe, Vol 8, Iss 4, p 212 (2022)
The presence of dust in the intracluster medium (ICM) has been a long-standing problem that is still awaiting elucidation. Direct observational diagnostics are rather challenging (though not impossible) either because of a sparse distribution of dust
Externí odkaz:
https://doaj.org/article/1ef5c8ce6d3e439ab7a16584ef526d84
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:662-667
One of the most distant galaxies GN-z11 was formed when the Universe was $\le$ 400 Myr old, and it displays a burst-like star formation rate $\sim 25~M_\odot$ yr$^{-1}$ with a metallicity $Z\sim 0.2\pm 0.1Z_\odot$. It resembles $z=2-3$ galaxies (at `
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59df1ba30ad8a48d1804c8f23d72acca
https://doi.org/10.1093/mnras/stad505
https://doi.org/10.1093/mnras/stad505
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 510:5579-5591
We study the effect of cosmic ray (CR) acceleration in the massive compact star cluster Westerlund 1 in light of its recent detection in $\gamma$-rays. Recent observations reveal a $1/r$ radial distribution of the CR energy density. Here we theoretic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f98e5558d40130c0b953187bd55c11ba
https://doi.org/10.1093/mnras/stac023
https://doi.org/10.1093/mnras/stac023
Publikováno v:
Open Astronomy. 31:154-165
Supernovae explosions (SNe) in a stratified interstellar disc can create large scale structures and outflows perpendicular to the disc. Their morphology and emission characteristics depend on interrelations between the number of exploded SNe, the ISM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::749ea10112f4c9349727cd669d0ad8d1
https://doi.org/10.1515/astro-2022-0021
https://doi.org/10.1515/astro-2022-0021
Autor:
Surajit Paul, Ruta Kale, Abhirup Datta, Aritra Basu, Sharanya Sur, Viral Parekh, Prateek Gupta, Swarna Chatterjee, Sameer Salunkhe, Asif Iqbal, Mamta Pandey-Pommier, Ramij Raja, Majidul Rahaman, Somak Raychaudhury, Biman B. Nath, Subhabrata Majumdar
Publikováno v:
J.Astrophys.Astron.
J.Astrophys.Astron., 2023, 44 (1), pp.38. ⟨10.1007/s12036-023-09914-2⟩
J.Astrophys.Astron., 2023, 44 (1), pp.38. ⟨10.1007/s12036-023-09914-2⟩
Diffuse radio emission has been detected in a considerable number of galaxy clusters and groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic particles in the large-scale structure (LSS) of the Universe. Since clust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7aa38d58c42eef52c22b58f6d6728d96
https://hal.science/hal-03862322
https://hal.science/hal-03862322
We consider the dynamics of and emission from growing superbubbles in a stratified interstellar gaseous disc driven by energy release from supernovae explosions in stellar clusters with {masses $M_{cl}= 10^5-1.6\times 10^6~M_\odot$}. Supernovae are s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a75defc2f4833a89b3ed9e9b527752c
Publikováno v:
Open Astronomy. 32
The majority of quasars detected at high redshifts ( z ≳ 6 z\gtrsim 6 ) strongly emit ultraviolet radiation with absolute magnitudes at rest-frame M 1450 Å , A B ∼ − ( 29 – 27 ) {M}_{1450\mathring{\rm A} ,AB}\hspace{0.33em} \sim \hspace{0.33
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6a44e79a6437a5218d510b774a65ab4
https://doi.org/10.1515/astro-2022-0218
https://doi.org/10.1515/astro-2022-0218
Autor:
Biman B. Nath, Wayne Orchiston
Publikováno v:
Journal of Astronomical History and Heritage. 24:629-651
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18d6c08751aa338c909a4f242774d48a
https://doi.org/10.3724/sp.j.1440-2807.2021.03.05
https://doi.org/10.3724/sp.j.1440-2807.2021.03.05