Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Zhong, Yi-Ming"'
Autor:
Zhong, Yi-Ming, Cholis, Ilias
The Galactic Center Excess (GCE) remains an enduring mystery, with leading explanations being annihilating dark matter or an unresolved population of millisecond pulsars. Analyzing the morphology of the GCE provides critical clues to identify its exa
Externí odkaz:
http://arxiv.org/abs/2401.02481
The presence of a central baryonic potential can have a significant impact on the gravothermal evolution of self-interacting dark matter (SIDM) haloes. We extend a semi-analytical fluid model to incorporate the influence of a static baryonic potentia
Externí odkaz:
http://arxiv.org/abs/2306.08028
Autor:
Yang, Shengqi, Jiang, Fangzhou, Benson, Andrew, Zhong, Yi-Ming, Mace, Charlie, Du, Xiaolong, Zeng, Zhichao Carton, Peter, Annika H. G., Fischer, Moritz S.
One necessary step for probing the nature of self-interacting dark matter (SIDM) particles with astrophysical observations is to pin down any possible velocity dependence in the SIDM cross section. Major challenges for achieving this goal include eli
Externí odkaz:
http://arxiv.org/abs/2305.05067
Publikováno v:
MNRAS, Vol 522, 1, L21-25 (2023)
The characteristics of the Galactic Center Excess (GCE) emission observed in gamma-ray energies -- especially the morphology of the GCE -- remain a hotly debated subject. The manner in which the dominant diffuse gamma-ray background is modeled has be
Externí odkaz:
http://arxiv.org/abs/2209.00006
The Return of the Templates: Revisiting the Galactic Center Excess with Multi-Messenger Observations
Publikováno v:
Phys. Rev. D 105, 103023 (2022)
The Galactic center excess (GCE) remains one of the most intriguing discoveries from the Fermi Large Area Telescope (LAT) observations. We revisit the characteristics of the GCE by first producing a new set of high-resolution galactic diffuse gamma-r
Externí odkaz:
http://arxiv.org/abs/2112.09706
Publikováno v:
JCAP 05 (2022) 036
A self-interacting dark matter halo can experience gravothermal collapse, resulting in a central core with an ultrahigh density. It can further contract and collapse into a black hole, a mechanism proposed to explain the origin of supermassive black
Externí odkaz:
http://arxiv.org/abs/2108.11967
Publikováno v:
Astrophys. J. Lett. 914 (2021) 2, L26
Observations show that supermassive black holes (SMBHs) with a mass of $\sim10^9 M_\odot$ exist when the Universe is just $6\%$ of its current age. We propose a scenario where a self-interacting dark matter halo experiences gravothermal instability a
Externí odkaz:
http://arxiv.org/abs/2010.15132
Dissipative dark matter self-interactions can affect halo evolution and change its structure. We perform a series of controlled N-body simulations to study impacts of the dissipative interactions on halo properties. The interplay between gravitationa
Externí odkaz:
http://arxiv.org/abs/1912.06757
Publikováno v:
Phys. Rev. Lett. 123, 121102 (2019)
We study the gravothermal evolution of dark matter halos in the presence of dissipative dark matter self-interactions. Dissipative interactions are present in many particle-physics realizations of the dark-sector paradigm and can significantly accele
Externí odkaz:
http://arxiv.org/abs/1809.01144