Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Dhruba Dutta Chowdhury"'
Autor:
Dhruba Dutta Chowdhury, Frank C. van den Bosch, Pieter van Dokkum, Victor H. Robles, Hsi-Yu Schive, Tzihong Chiueh
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 68 (2023)
Fuzzy dark matter (FDM), consisting of ultralight bosons, is an intriguing alternative to cold dark matter. Numerical simulations solving the Schrödinger–Poisson (SP) equation, which governs FDM dynamics, show that FDM halos consist of a central s
Externí odkaz:
https://doaj.org/article/548cdf8570ab4bd094dcf8e7c78d8c15
Autor:
Pieter van Dokkum, Zili Shen, Aaron J. Romanowsky, Roberto Abraham, Charlie Conroy, Shany Danieli, Dhruba Dutta Chowdhury, Michael A. Keim, J. M. Diederik Kruijssen, Joel Leja, Sebastian Trujillo-Gomez
It was recently proposed that the dark matter-deficient ultra-diffuse galaxies DF2 and DF4 in the NGC1052 group could be the products of a "bullet dwarf" collision between two gas-rich progenitor galaxies. In this model DF2 and DF4 formed at the same
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::476f774513f1452a1d7925ec5a37dc75
http://arxiv.org/abs/2207.07129
http://arxiv.org/abs/2207.07129
Autor:
Pieter van Dokkum, Zili Shen, Michael A. Keim, Sebastian Trujillo-Gomez, Shany Danieli, Dhruba Dutta Chowdhury, Roberto Abraham, Charlie Conroy, J. M. Diederik Kruijssen, Daisuke Nagai, Aaron Romanowsky
The ultra-diffuse galaxies DF2 and DF4 in the NGC1052 group share several unusual properties: they both have large sizes, rich populations of overluminous and large globular clusters, and very low velocity dispersions indicating little or no dark mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8220b48c3bfcfd43438566fd04d03464
Autor:
Frank C. van den Bosch, Dhruba Dutta Chowdhury, Tzihong Chiueh, Tom Broadhurst, Hsi-Yu Schive, Victor H. Robles, Pieter G. van Dokkum
Fuzzy Dark Matter (FDM), consisting of ultralight bosons ($m_{\rm b} \sim 10^{-22}\ \rm eV$), is an intriguing alternative to Cold Dark Matter. Numerical simulations that solve the Schr\"odinger-Poisson (SP) equation show that FDM halos consist of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af81dd68c4a20e14b2908885d96aaa0d
http://arxiv.org/abs/2105.05268
http://arxiv.org/abs/2105.05268
Autor:
Aaron J. Romanowsky, Charlie Conroy, Jean P. Brodie, Roberto Abraham, Andrew E. Dolphin, Zili Shen, Pieter van Dokkum, J. M. Diederik Kruijssen, Shany Danieli, Dhruba Dutta Chowdhury
The large and diffuse galaxies NGC1052-DF2 and NGC1052-DF4 have been found to have very low dark matter content and a population of luminous globular clusters. Accurate distance measurements are key to interpreting these observations. Recently, the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51dd5e434ae130e7c1c79003e65a054e
The ultra-diffuse galaxy NGC 1052-DF2 has an overabundance of luminous globular clusters (GCs), and its kinematics is consistent with the presence of little to no dark matter. As the velocity dispersion among the GCs is comparable to the expected int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ffc055c6cb774d01c771269abf023be
Observations of redshifted 21-cm signal from neutral hydrogen (HI) appear to be the most promising probe of the cosmic dark ages. The signal carries information about the thermal state along with density distribution of the intergalactic medium (IGM)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5d119fd80e0ea0203ecd659693219b9
http://arxiv.org/abs/1810.05908
http://arxiv.org/abs/1810.05908
Several analytic and numerical studies have indicated that the interstellar medium of a quasar host galaxy heated by feedback can contribute to a substantial secondary signal in the cosmic microwave background (CMB) through the thermal Sunyaev-Zel'do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::432260e3fb447736b7f1398816e01e72
Publikováno v:
The Astrophysical Journal. 877:133
The dark matter content of the ultra diffuse galaxy NGC1052-DF2, as inferred from globular cluster (GC) and stellar kinematics, carries a considerable amount of uncertainty, with current constraints also allowing for the complete absence of dark matt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e23054513f18c562d9c8547fb02972c5
https://doi.org/10.3847/1538-4357/ab1be4
https://doi.org/10.3847/1538-4357/ab1be4
Publikováno v:
Astrophysical Journal; Jun2019, Vol. 877 Issue 2, p1-1, 1p