A pilot search for MeV gamma-ray emission from five galaxy clusters using archival COMPTEL data
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910430907072512 |
|---|---|
| author | Manna, Siddhant Desai, Shantanu |
| author_facet | Manna, Siddhant Desai, Shantanu |
| contents | We search for MeV gamma-ray emission between 0.75-30 MeV from five galaxy clusters, viz. Coma, VIRGO, SPT-CL J2012-5649, Bullet, and El Gordo, using archival data from the COMPTEL telescope. For this purpose we use three search templates: point source, radial disk and radial Gaussian. We do not detect any signals from Coma, SPT-CL J2012-5649, Bullet and El Gordo clusters with the 95\% c.l. photon energy flux limit $\sim 10^{-10} ~\rm{erg /cm^2/s} $. For VIRGO, we detect a non-zero signal between 0.92 to 1.63 MeV having marginal significance of about $2.5σ$, with the observed energy flux $ \sim 10^{-9}~\rm{ergs/cm^2/s}$. However, we do not confirm the previously reported evidence in literature for a gamma-ray line from Coma and VIRGO clusters between 5-7 MeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_13240 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A pilot search for MeV gamma-ray emission from five galaxy clusters using archival COMPTEL data Manna, Siddhant Desai, Shantanu High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics We search for MeV gamma-ray emission between 0.75-30 MeV from five galaxy clusters, viz. Coma, VIRGO, SPT-CL J2012-5649, Bullet, and El Gordo, using archival data from the COMPTEL telescope. For this purpose we use three search templates: point source, radial disk and radial Gaussian. We do not detect any signals from Coma, SPT-CL J2012-5649, Bullet and El Gordo clusters with the 95\% c.l. photon energy flux limit $\sim 10^{-10} ~\rm{erg /cm^2/s} $. For VIRGO, we detect a non-zero signal between 0.92 to 1.63 MeV having marginal significance of about $2.5σ$, with the observed energy flux $ \sim 10^{-9}~\rm{ergs/cm^2/s}$. However, we do not confirm the previously reported evidence in literature for a gamma-ray line from Coma and VIRGO clusters between 5-7 MeV. |
| title | A pilot search for MeV gamma-ray emission from five galaxy clusters using archival COMPTEL data |
| topic | High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2401.13240 |