Decaying dark matter in dwarf spheroidal galaxies: Prospects for x-ray and gamma-ray telescopes

被引：14

作者：

Ando, Shin'ichiro ^{[1
,2
,3
]}

Barik, Suvendu K. ^{[2
]}

Feng, Zhuoran ^{[1
]}

Finetti, Marco ^{[2
]}

Chaves, Andreas Guerra ^{[1
]}

Kanuri, Sahaja ^{[1
]}

Kleverlaan, Jorinde ^{[4
]}

Ma, Yixuan ^{[4
]}

Di Serracapriola, Nicolo Maresca ^{[2
]}

Meinema, Matthew S. P. ^{[1
]}

Martinez, Imanol Navarro ^{[2
]}

Ng, Kenny C. Y. ^{[1
,2
,5
]}

Peerbooms, Ebo ^{[2
]}

van Veen, Casper A. ^{[1
]}

Zimmer, Fabian ^{[1
]}

机构：

[1] Univ Amsterdam, GRAPPA Inst, NL-1098 XH Amsterdam, Netherlands

[2] Univ Amsterdam, Inst Theoret Phys, NL-1098 XH Amsterdam, Netherlands

[3] Univ Tokyo, Kavli Inst Phys & Math Universe Kavli IPMU WPI, Kashiwa, Chiba 2778583, Japan

[4] Univ Amsterdam, Anton Pannekoek Inst Astron, NL-1098 XH Amsterdam, Netherlands

[5] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

LINE;

D O I：

10.1103/PhysRevD.104.023022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Dwarf spheroidal galaxies are dark matter dominated systems, and as such, ideal for indirect dark matter searches. If dark matter decays into high-energy photons in the dwarf galaxies, they will be a good target for current and future generations of x-ray and gamma-ray telescopes. By adopting the latest estimates of density profiles of dwarf galaxies in the Milky Way, we revise the estimates dark matter decay rates in dwarf galaxies; our results are more robust, but weaker than previous estimates. Applying these results, we study the detectability of dark matter decays with x-ray and very-high-energy gamma-ray telescopes, such as eROSITA, XRISM, Athena, HAWC, and CTA. Our projection shows that all of these x-ray telescopes will be able to critically assess the claim of the 7 keV sterile neutrino decays from stacked galaxy clusters and nearby galaxies. For TeV decaying dark matter, we can constrain its lifetime to be longer than similar to 10(27)-10(28) s. We also make projections for future dwarf galaxies that would be newly discovered with the Vera Rubin Observatory Legacy Survey of Space and Time, which will further improve the expected sensitivity to dark matter decays both in the keV and PeV mass ranges.

引用

页数：19

共 50 条

[41] Dark matter profiles and annihilation in dwarf spheroidal galaxies: prospectives for present and future γ-ray observatories - I. The classical dwarf spheroidal galaxies
Charbonnier, A.
Combet, C.
Daniel, M.
Funk, S.
Hinton, J. A.
Maurin, D.
Power, C.
Read, J. I.
Sarkar, S.
Walker, M. G.
Wilkinson, M. I.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 418 (03) : 1526 - 1556
[42] Gamma-ray and synchrotron radiation from dark matter annihilations in ultra-faint dwarf galaxies
Bhattacharjee, Pooja
Choudhury, Debajyoti
Das, Kasinath
Ghosh, Dilip Kumar
Majumdar, Pratik
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2021, (06):
[43] On the sensitivity of X-ray and gamma-ray telescopes with various types of coded apertures
Sodin, LG
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 1997, 23 (01): : 133 - 136
[44] Search for Orion-like gamma-ray objects with X-ray telescopes
Dogiel, VA
Ichimura, A
Inoue, H
Masai, K
ASTROPHYSICAL LETTERS & COMMUNICATIONS, 1999, 38 (1-6) : 375 - 378
[45] Models of X-ray and gamma-ray emission from Seyfert galaxies
Svensson, R
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1996, 120 (04): : C475 - C480
[46] Light from darkness: Searching for Dark Matter with gamma-ray and neutrino telescopes
Bertone, Gianfranco
NEW ASTRONOMY REVIEWS, 2007, 51 (3-4) : 321 - 326
[47] Constraining heavy decaying dark matter with the high energy gamma-ray limits
Kalashev, O. E.
Kuznetsov, M. Yu.
PHYSICAL REVIEW D, 2016, 94 (06):
[48] GAMMA-RAY SIGNATURES OF DARK MATTER
BERGSTROM, L
TAUP 89: WORKSHOP ON THEORETICAL AND PHENOMENOLOGICAL ASPECTS OF UNDERGROUND PHYSICS, 1989, : 347 - 352
[49] Gamma-ray signatures of Dark Matter
Cirelli, Marco
RICAP16, 6TH ROMA INTERNATIONAL CONFERENCE ON ASTROPARTICLE PHYSICS, 2017, 136
[50] Gamma-ray telescopes
Gehrels, Neil
Cannizzo, John K.
EXPERIMENTAL ASTRONOMY, 2009, 26 (1-3) : 111 - 122

← 1 2 3 4 5 →