Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Derek Inman"'
Autor:
Helen Shao, Francisco Villaescusa-Navarro, Pablo Villanueva-Domingo, Romain Teyssier, Lehman H. Garrison, Marco Gatti, Derek Inman, Yueying Ni, Ulrich P. Steinwandel, Mihir Kulkarni, Eli Visbal, Greg L. Bryan, Daniel Anglés-Alcázar, Tiago Castro, Elena Hernández-Martínez, Klaus Dolag
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 27 (2023)
We train graph neural networks on halo catalogs from Gadget N -body simulations to perform field-level likelihood-free inference of cosmological parameters. The catalogs contain ≲5000 halos with masses ≳10 ^10 h ^−1 M _⊙ in a periodic volume
Externí odkaz:
https://doaj.org/article/a8c3ad9a6b294721a0554fb79a931eb1
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023204 (2020)
Even if massive (10M_{⊙}≲M≲10^{4}M_{⊙}) primordial black holes (PBHs) can only account for a small fraction of the dark matter (DM) in the universe, they may still be responsible for a sizable fraction of the coalescence events measured by LI
Externí odkaz:
https://doaj.org/article/06046a7560d14ac6b8e92bcd11d9a893
Publikováno v:
Research in Astronomy and Astrophysics. 23:065007
We examine the possibility of applying the baryonic acoustic oscillation reconstruction method to improve the neutrino mass Σm ν constraint. Thanks to the Gaussianization of the process, we demonstrate that the reconstruction algorithm could improv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86c65c2b01091c6e69713c8ffe1bcc0e
https://doi.org/10.1088/1674-4527/accb7c
https://doi.org/10.1088/1674-4527/accb7c
Autor:
Derek Inman, Kohri, Kazunori
Publikováno v:
INSPIRE-HEP
We consider the consequences of a matter power spectrum which rises on small scales until eventually being cutoff by microphysical processes associated with the particle nature of dark matter. Evolving the perturbations of a weakly interacting massiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18e5e178247622655c240e0a7ba100b7
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 487:4181-4189
Baryonic feedback can significantly modify the spatial distribution of matter on small scales and create a bulk relative velocity between the dominant cold dark matter and the hot gas. We study the consequences of such bulk motions using two high-res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::064a598c0c0c2c8a761c2eed8518390f
https://doi.org/10.1093/mnras/stz1542
https://doi.org/10.1093/mnras/stz1542
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Cataneo, M, Emberson, J D, Inman, D, Harnois-Deraps, J & Heymans, C 2020, ' On the road to percent accuracy III : non-linear reaction of the matter power spectrum to massive neutrinos ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 3, pp. 3101-3107 . https://doi.org/10.1093/mnras/stz3189
Cataneo, M, Emberson, J D, Inman, D, Harnois-Deraps, J & Heymans, C 2020, ' On the road to percent accuracy III : non-linear reaction of the matter power spectrum to massive neutrinos ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 3, pp. 3101-3107 . https://doi.org/10.1093/mnras/stz3189
We analytically model the non-linear effects induced by massive neutrinos on the total matter power spectrum using the halo model reaction framework of Cataneo et al. 2019. In this approach the halo model is used to determine the relative change to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8067baf9a94d8c16bc30f031de34a998
Publikováno v:
Physical Review Research
Physical Review Research, American Physical Society, 2020, 2 (2), pp.023204. ⟨10.1103/PhysRevResearch.2.023204⟩
Physical Review Research, American Physical Society, 2020, 2 (2), pp.023204. ⟨10.1103/PhysRevResearch.2.023204⟩
Even if massive ($10\,M_\odot \lesssim M \lesssim 10^4 M_\odot$) primordial black holes (PBHs) can only account for a small fraction of the dark matter (DM) in the universe, they may still be responsible for a sizable fraction of the coalescence even
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cd16acf3f2ee3ab98b820cfe185762d
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 469:1968-1973
Reconstruction techniques are commonly used in cosmology to reduce complicated nonlinear behaviours to a more tractable linearized system. We study a new reconstruction technique that uses the Moving-Mesh algorithm to estimate the displacement field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::352b1ee8970204ad5f3af3cfe82a17db
https://doi.org/10.1093/mnras/stx774
https://doi.org/10.1093/mnras/stx774
Autor:
Derek Inman, Yacine Ali-Haïmoud
Publikováno v:
Physical Review D. 100
Cold dark matter (CDM) could be composed of primordial black holes (PBH) in addition to or instead of more orthodox weakly interacting massive particle dark matter (PDM). We study the formation of the first structures in such $\mathrm{\ensuremath{\La
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43469d4108ab1ba35316916ed4897ef6
https://doi.org/10.1103/physrevd.100.083528
https://doi.org/10.1103/physrevd.100.083528
Autor:
Derek Inman, Hao-Ran Yu
Publikováno v:
The Astrophysical Journal Supplement Series. 250:21
The cosmic neutrino background is an important component of the Universe that is difficult to include in cosmological simulations due to the extremely large velocity dispersion of neutrino particles. We develop a new approach to simulate cosmic neutr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a02c657467d19ccd5fd2ca3848ea469
https://doi.org/10.3847/1538-4365/aba0b3
https://doi.org/10.3847/1538-4365/aba0b3