Gamma-Ray Effects of Dark Forces in Dark Matter Clumps
Joint Authors
Kirillov, A.
Khlopov, M. Yu.
Belotsky, Konstantin
Source
Advances in High Energy Physics
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-08
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Existence of new gauge U(1) symmetry possessed by dark matter (DM) particles implies the existence of a new Coulomb-like interaction, which leads to Sommerfeld-Gamow-Sakharov enhancement of dark matter annihilation at low relative velocities.
We discuss a possibility to put constraints on such dark forces of dark matter from the observational data on the gamma radiation in our Galaxy.
Gamma-rays are supposed to originate from annihilation of DM particles in the small scale clumps, in which annihilation rate is supposed to be enhanced, besides higher density, due to smaller relative velocities v of DM particles.
For possible cross sections, mass of annihilating particles, masses of clumps, and the contribution of annihilating particles in the total DM density we constrain the strength of new dark long range forces from comparison of predicted gamma-ray signal with Fermi/LAT data on unidentified point-like gamma-ray sources (PGS) as well as on diffuse γ-radiation.
Both data on diffuse radiation and data on PGS put lower constraints on annihilation cross section at any dark interaction constant, where diffuse radiation provides stronger constraint at smaller clump mass.
Density of annihilating DM particles is conventionally supposed to be defined by the frozen annihilation processes in early Universe.
American Psychological Association (APA)
Belotsky, Konstantin& Khlopov, M. Yu.& Kirillov, A.. 2014. Gamma-Ray Effects of Dark Forces in Dark Matter Clumps. Advances in High Energy Physics،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-488293
Modern Language Association (MLA)
Belotsky, Konstantin…[et al.]. Gamma-Ray Effects of Dark Forces in Dark Matter Clumps. Advances in High Energy Physics No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-488293
American Medical Association (AMA)
Belotsky, Konstantin& Khlopov, M. Yu.& Kirillov, A.. Gamma-Ray Effects of Dark Forces in Dark Matter Clumps. Advances in High Energy Physics. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-488293
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-488293