Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays
We suggest a new alternative model of positron origin in the Galaxy. It is shown in our model that interactions of the electromagnetic fields of colliding ions (ultraperipheral ion collisions) can contribute to the total production of Galactic positrons. The corresponding cross-section is estimated...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Physics |
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| Online Access: | https://www.mdpi.com/2624-8174/6/1/18 |
| _version_ | 1797239623072612352 |
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| author | Dmitry Chernyshov Vladimir Dogiel Igor Dremin |
| author_facet | Dmitry Chernyshov Vladimir Dogiel Igor Dremin |
| author_sort | Dmitry Chernyshov |
| collection | DOAJ |
| description | We suggest a new alternative model of positron origin in the Galaxy. It is shown in our model that interactions of the electromagnetic fields of colliding ions (ultraperipheral ion collisions) can contribute to the total production of Galactic positrons. The corresponding cross-section is estimated by using the Born approximation and the equivalent photon method. This process of ion collisions dominates in the range of subrelativistic energies and produces positrons with energies of several MeV. Despite its low efficiency, as it requires more than 0.1 erg to produce a single positron, this process may be an effective source of positrons in the Galactic medium. |
| first_indexed | 2024-04-24T17:54:28Z |
| format | Article |
| id | doaj.art-98935bc64203487ca7e08388d1d5b2d9 |
| institution | Directory Open Access Journal |
| issn | 2624-8174 |
| language | English |
| last_indexed | 2024-04-24T17:54:28Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Physics |
| spelling | doaj.art-98935bc64203487ca7e08388d1d5b2d92024-03-27T14:00:26ZengMDPI AGPhysics2624-81742024-02-016125126310.3390/physics6010018Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic RaysDmitry Chernyshov0Vladimir Dogiel1Igor Dremin2I.E.Tamm Theoretical Physics Division, P.N.Lebedev Institute of Physics, Leninskii pr. 53, 119991 Moscow, RussiaI.E.Tamm Theoretical Physics Division, P.N.Lebedev Institute of Physics, Leninskii pr. 53, 119991 Moscow, RussiaI.E.Tamm Theoretical Physics Division, P.N.Lebedev Institute of Physics, Leninskii pr. 53, 119991 Moscow, RussiaWe suggest a new alternative model of positron origin in the Galaxy. It is shown in our model that interactions of the electromagnetic fields of colliding ions (ultraperipheral ion collisions) can contribute to the total production of Galactic positrons. The corresponding cross-section is estimated by using the Born approximation and the equivalent photon method. This process of ion collisions dominates in the range of subrelativistic energies and produces positrons with energies of several MeV. Despite its low efficiency, as it requires more than 0.1 erg to produce a single positron, this process may be an effective source of positrons in the Galactic medium.https://www.mdpi.com/2624-8174/6/1/18electron–positron productionultraperipheral ion collisionsGalaxy positrons |
| spellingShingle | Dmitry Chernyshov Vladimir Dogiel Igor Dremin Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays Physics electron–positron production ultraperipheral ion collisions Galaxy positrons |
| title | Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays |
| title_full | Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays |
| title_fullStr | Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays |
| title_full_unstemmed | Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays |
| title_short | Alternative Origin of Galactic Positrons Generated by Ultraperipheral Collisions of Cosmic Rays |
| title_sort | alternative origin of galactic positrons generated by ultraperipheral collisions of cosmic rays |
| topic | electron–positron production ultraperipheral ion collisions Galaxy positrons |
| url | https://www.mdpi.com/2624-8174/6/1/18 |
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