Decaying dark matter in halos of primordial black holes
Abstract We investigate photon signatures of general decaying dark-matter particles in halos of primordial black holes. We derive the halo-profile density and the total decay rate for these combined dark-matter scenarios. For the case of axion-like particles of masses below $$\mathcal {O}( 1 )\mathr...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-7173-x |
| _version_ | 1818517858394570752 |
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| author | Florian Kühnel Tommy Ohlsson |
| author_facet | Florian Kühnel Tommy Ohlsson |
| author_sort | Florian Kühnel |
| collection | DOAJ |
| description | Abstract We investigate photon signatures of general decaying dark-matter particles in halos of primordial black holes. We derive the halo-profile density and the total decay rate for these combined dark-matter scenarios. For the case of axion-like particles of masses below $$\mathcal {O}( 1 )\mathrm{keV}$$ O(1)keV , we find strong bounds on the decay constant which are several orders of magnitude stronger than the strongest existing bounds, for all halo masses above $$\mathcal {O}( 10^{-5} )$$ O(10-5) solar masses. Using future X-ray measurements, it will be possible to push these bounds on such combined dark-matter scenarios even further. |
| first_indexed | 2024-12-11T01:01:57Z |
| format | Article |
| id | doaj.art-892012fd5ae047b7a64996ec84ebd69c |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-11T01:01:57Z |
| publishDate | 2019-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-892012fd5ae047b7a64996ec84ebd69c2022-12-22T01:26:18ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-08-017981510.1140/epjc/s10052-019-7173-xDecaying dark matter in halos of primordial black holesFlorian Kühnel0Tommy Ohlsson1Department of Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University CenterDepartment of Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University CenterAbstract We investigate photon signatures of general decaying dark-matter particles in halos of primordial black holes. We derive the halo-profile density and the total decay rate for these combined dark-matter scenarios. For the case of axion-like particles of masses below $$\mathcal {O}( 1 )\mathrm{keV}$$ O(1)keV , we find strong bounds on the decay constant which are several orders of magnitude stronger than the strongest existing bounds, for all halo masses above $$\mathcal {O}( 10^{-5} )$$ O(10-5) solar masses. Using future X-ray measurements, it will be possible to push these bounds on such combined dark-matter scenarios even further.http://link.springer.com/article/10.1140/epjc/s10052-019-7173-x |
| spellingShingle | Florian Kühnel Tommy Ohlsson Decaying dark matter in halos of primordial black holes European Physical Journal C: Particles and Fields |
| title | Decaying dark matter in halos of primordial black holes |
| title_full | Decaying dark matter in halos of primordial black holes |
| title_fullStr | Decaying dark matter in halos of primordial black holes |
| title_full_unstemmed | Decaying dark matter in halos of primordial black holes |
| title_short | Decaying dark matter in halos of primordial black holes |
| title_sort | decaying dark matter in halos of primordial black holes |
| url | http://link.springer.com/article/10.1140/epjc/s10052-019-7173-x |
| work_keys_str_mv | AT floriankuhnel decayingdarkmatterinhalosofprimordialblackholes AT tommyohlsson decayingdarkmatterinhalosofprimordialblackholes |