INTEGRAL X-ray constraints on sub-GeV dark matter

被引：0
|
作者：
Cirelli, Marco [1 ,2 ]
Kavanagh, Bradley J. [3 ]
Fornengo, Nicolao [4 ,5 ]
Pinetti, Elena [1 ,2 ,4 ,5 ]
机构：
[1] Sorbonne Univ, 4 Pl Jussieu, F-75252 Paris, France
[2] CNRS, UMR 7589, Lab Phys Theor & Hautes Energies LPTHE, 4 Pl Jussieu, F-75252 Paris, France
[3] Inst Fis Cantabria, Ave Castros S-N, Santander 39005, Spain
[4] Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy
[5] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy
来源：
37TH INTERNATIONAL COSMIC RAY CONFERENCE, ICRC2021 | 2022年
关键词：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this work we proposed to constrain sub-GeV dark matter particles (1 MeV <= m(DM) <= 5 GeV) by looking at energies much lower than the mass range of interest, by means of the inverse Compton scattering contribution to the total flux. In particular, the electrons and positrons produced by dark matter particles give rise to X rays by up-scattering the low-energy photons in the Milky Way, notably cosmic microwave background, infrared light from dust and optical starlight. These X rays fall in the energy range covered by the Integral data, which we used to constrain the dark matter annihilation cross-section. We considered three annihilation channels: electron, muon and pion. As a result, we derived competitive constraints for dark matter particles with a mass between 150 MeV and 1.5 GeV.
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页数：8
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