Zobrazeno 1 - 10
of 376
pro vyhledávání: '"Kaplinghat, Manoj"'
The rotation curves of spiral galaxies exhibit a great diversity that challenge our understanding of galaxy formation and the nature of dark matter. Previous studies showed that in self-interacting dark matter (SIDM) models with a cross section per u
Externí odkaz:
http://arxiv.org/abs/2407.15005
When dark matter has a large cross section for self scattering, halos can undergo a process known as gravothermal core collapse, where the inner core rapidly increases in density and temperature. To date, several methods have been used to implement S
Externí odkaz:
http://arxiv.org/abs/2402.12452
Autor:
Song, Deheng, Eckner, Christopher, Gordon, Chris, Calore, Francesca, Macias, Oscar, Abazajian, Kevork N., Horiuchi, Shunsaku, Kaplinghat, Manoj, Pohl, Martin
Publikováno v:
2024MNRAS.530.4395S
The gamma-ray Fermi-LAT Galactic centre excess (GCE) has puzzled scientists for over 15 years. Despite ongoing debates about its properties, and especially its spatial distribution, its nature remains elusive. We scrutinize how the estimated spatial
Externí odkaz:
http://arxiv.org/abs/2402.05449
Autor:
Gad-Nasr, Sophia, Boddy, Kimberly K., Kaplinghat, Manoj, Outmezguine, Nadav Joseph, Sagunski, Laura
We study the evolution of isolated self-interacting dark matter (SIDM) halos that undergo gravothermal collapse and are driven deep into the short-mean-free-path regime. We assume spherical Navarro-Frenk-White (NFW) halos as initial conditions and al
Externí odkaz:
http://arxiv.org/abs/2312.09296
Semi-analytic modeling furnishes an efficient avenue for characterizing the properties of dark matter halos associated with satellites of Milky Way-like systems, as it easily accounts for uncertainties arising from halo-to-halo variance, the orbital
Externí odkaz:
http://arxiv.org/abs/2311.05676
We provide new constraints on the dark matter halo density profile of Milky Way (MW) dwarf spheroidal galaxies (dSphs) using the phase-space distribution function (DF) method. After assessing the systematics of the approach against mock data from the
Externí odkaz:
http://arxiv.org/abs/2311.01528
Autor:
Adhikari, Susmita, Banerjee, Arka, Boddy, Kimberly K., Cyr-Racine, Francis-Yan, Desmond, Harry, Dvorkin, Cora, Jain, Bhuvnesh, Kahlhoefer, Felix, Kaplinghat, Manoj, Nierenberg, Anna, Peter, Annika H. G., Robertson, Andrew, Sakstein, Jeremy, Zavala, Jesús
Self-interacting dark matter (SIDM) arises generically in scenarios for physics beyond the Standard Model that have dark sectors with light mediators or strong dynamics. The self-interactions allow energy and momentum transport through halos, alterin
Externí odkaz:
http://arxiv.org/abs/2207.10638
Autor:
Jiang, Fangzhou, Benson, Andrew, Hopkins, Philip F., Slone, Oren, Lisanti, Mariangela, Kaplinghat, Manoj, Peter, Annika H. G., Zeng, Zhichao Carton, Du, Xiaolong, Yang, Shengqi, Shen, Xuejian
We combine the isothermal Jeans model and the model of adiabatic halo contraction into a simple semi-analytic procedure for computing the density profile of self-interacting dark-matter (SIDM) haloes with the gravitational influence from the inhabita
Externí odkaz:
http://arxiv.org/abs/2206.12425
Autor:
Outmezguine, Nadav Joseph, Boddy, Kimberly K., Gad-Nasr, Sophia, Kaplinghat, Manoj, Sagunski, Laura
We study the evolution of isolated self-interacting dark matter (SIDM) halos using spherically-symmetric gravothermal equations allowing for the scattering cross section to be velocity dependent. We focus our attention on the large class of models wh
Externí odkaz:
http://arxiv.org/abs/2204.06568
We analyze circular velocity profiles of seven ultradiffuse galaxies (UDGs) that are isolated and gas-rich. Assuming that the dark matter halos of these UDGs have a Navarro-Frenk-White (NFW) density profile or a Read density profile (which allows for
Externí odkaz:
http://arxiv.org/abs/2204.05981