Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Keri L Dixon"'
Autor:
Sultan Hassan, Christopher C. Lovell, Piero Madau, Marc Huertas-Company, Rachel S. Somerville, Blakesley Burkhart, Keri L. Dixon, Robert Feldmann, Tjitske K. Starkenburg, John F. Wu, Christian Kragh Jespersen, Joseph D. Gelfand, Ankita Bera
Publikováno v:
The Astrophysical Journal Letters, Vol 958, Iss 1, p L3 (2023)
An unprecedented array of new observational capabilities are starting to yield key constraints on models of the epoch of first light in the Universe. In this Letter we discuss the implications of the UV radiation background at cosmic dawn inferred by
Externí odkaz:
https://doaj.org/article/356c4203e7b64c46a0ec2d5c329cb998
Autor:
Stefan Waterval, Sana Elgamal, Matteo Nori, Mario Pasquato, Andrea V Macciò, Marvin Blank, Keri L Dixon, Xi Kang, Tengiz Ibrayev
Although active galactic nuclei (AGN) feedback is required in simulations of galaxies to regulate star formation, further downstream effects on the dark matter distribution of the halo and stellar kinematics of the central galaxy can be expected. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc33df1348d4508f104fe6c4c820da04
The transition of high-mass galaxies from being blue and star forming to being red and dead is a crucial step in galaxy evolution, yet not fully understood. In this work, we use the NIHAO suite of galaxy simulations to investigate the relation betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c51e0eac224f8c51574ca3781d980be5
Autor:
Garrelt Mellema, Hannah E Ross, Keri L. Dixon, Sambit K. Giri, Raghunath Ghara, Ilian T. Iliev
Publikováno v:
Monthly Notices of the Royal Astronomical Society, vol 506, iss 3
The 21-cm signal from the Cosmic Dawn (CD) is likely to contain large fluctuations, with the most extreme astrophysical models on the verge of being ruled out by observations from radio interferometers. It is therefore vital that we understand not on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e64709ff9915fc32618c4ca4cc5aa8d
https://escholarship.org/uc/item/7zw3w6hb
https://escholarship.org/uc/item/7zw3w6hb
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 489:1590-1605
We present the prospects of extracting information about the Epoch of Reionization by identifying the remaining neutral regions, referred to as islands, in tomographic observations of the redshifted 21-cm signal. Using simulated data sets we show tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f537333d0f7b33a8e95f3ef8f101a0b
https://doi.org/10.1093/mnras/stz2224
https://doi.org/10.1093/mnras/stz2224
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We use thirty-eight high-resolution simulations of galaxy formation between redshift 10 and 5 to study the impact of a 3 keV warm dark matter (WDM) candidate on the high-redshift Universe. We focus our attention on the stellar mass function and the g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b50f807598cb280df766241025750528
https://doi.org/10.1093/mnras/stz1924
https://doi.org/10.1093/mnras/stz1924
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the response of cold dark matter (CDM) haloes to baryonic processes. Previous work has shown that the halo response is primarily a function of the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21b25fe133bd0a21774c43b7a37588d6
http://arxiv.org/abs/2011.11351
http://arxiv.org/abs/2011.11351
Autor:
Stefan Waterval, Nikhil Arora, Tobias Buck, Daniel Huterer Prats, Xi Kang, Keri L. Dixon, Andrea V. Macciò, Stéphane Courteau
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We use hydrodynamical cosmological simulations to show that it is possible to create, via tidal interactions, galaxies lacking dark matter in a dark matter dominated universe. We select dwarf galaxies from the NIHAO project, obtained in the standard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b768a82a71aaf133ebb6892bb78d927c
http://arxiv.org/abs/2010.02245
http://arxiv.org/abs/2010.02245
Publikováno v:
Proceedings of the International Astronomical Union. 12:34-38
The upcoming radio interferometer Square Kilometre Array is expected to directly detect the redshifted 21-cm signal from the Cosmic Dawn for the first time. In this era temperature fluctuations from X-ray heating of the neutral intergalactic medium c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fefafa7918ece1d1a55d47213d95e483
https://doi.org/10.1017/s1743921317011115
https://doi.org/10.1017/s1743921317011115
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 473:38-58
Radiative feedback from stars and galaxies has been proposed as a potential solution to many of the tensions with simplistic galaxy formation models based on $\Lambda$CDM, such as the faint end of the UV luminosity function. The total energy budget o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91a068ffe4ada90558a94cf5ae2a8d18
https://doi.org/10.1093/mnras/stx2324
https://doi.org/10.1093/mnras/stx2324