Identification of the ~3.55 keV emission line candidate objects across the sky
An emission line at the energy ∼3.55 keV detected in different galaxies and galaxy clusters has caused numerous discussions in high-energy astrophysics and particle physics communities. To reveal the origin of the line, we analyzed publicly-available observations of MOS cameras from XMM-Newton cosmi...
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| Published in: | Advances in Astronomy and Space Physics |
|---|---|
| Date: | 2015 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Головна астрономічна обсерваторія НАН України
2015
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119931 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Identification of the ~3.55 keV emission line candidate objects across the sky / D.O. Savchenko, D.A. Iakubovskyi // Advances in Astronomy and Space Physics. — 2015. — Т. 5., вип. 2. — С. 89-92. — Бібліогр.: 24 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862713759453151232 |
|---|---|
| author | Savchenko, D.O. Iakubovskyi, D.A. |
| author_facet | Savchenko, D.O. Iakubovskyi, D.A. |
| citation_txt | Identification of the ~3.55 keV emission line candidate objects across the sky / D.O. Savchenko, D.A. Iakubovskyi // Advances in Astronomy and Space Physics. — 2015. — Т. 5., вип. 2. — С. 89-92. — Бібліогр.: 24 назв. — англ. |
| collection | DSpace DC |
| container_title | Advances in Astronomy and Space Physics |
| description | An emission line at the energy ∼3.55 keV detected in different galaxies and galaxy clusters has caused numerous discussions in high-energy astrophysics and particle physics communities. To reveal the origin of the line, we analyzed publicly-available observations of MOS cameras from XMM-Newton cosmic observatory - the instrument with the largest sensitivity for narrow faint X-ray lines - previously combined in X-ray sky maps. Because an extremely large timescale is needed for detailed analysis, we used the wavelet method instead. Extensive simulations of the central part of the Andromeda galaxy are used to check the validity of this method. The resulting list of wavelet detections now contains 235 sky regions. This list will be used in future works for more detailed spectral analysis.
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| first_indexed | 2025-12-07T17:46:16Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-119931 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2227-1481 |
| language | English |
| last_indexed | 2025-12-07T17:46:16Z |
| publishDate | 2015 |
| publisher | Головна астрономічна обсерваторія НАН України |
| record_format | dspace |
| spelling | Savchenko, D.O. Iakubovskyi, D.A. 2017-06-10T11:57:00Z 2017-06-10T11:57:00Z 2015 Identification of the ~3.55 keV emission line candidate objects across the sky / D.O. Savchenko, D.A. Iakubovskyi // Advances in Astronomy and Space Physics. — 2015. — Т. 5., вип. 2. — С. 89-92. — Бібліогр.: 24 назв. — англ. 2227-1481 DOI:10.17721/2227-1481.5.89-92 https://nasplib.isofts.kiev.ua/handle/123456789/119931 An emission line at the energy ∼3.55 keV detected in different galaxies and galaxy clusters has caused numerous discussions in high-energy astrophysics and particle physics communities. To reveal the origin of the line, we analyzed publicly-available observations of MOS cameras from XMM-Newton cosmic observatory - the instrument with the largest sensitivity for narrow faint X-ray lines - previously combined in X-ray sky maps. Because an extremely large timescale is needed for detailed analysis, we used the wavelet method instead. Extensive simulations of the central part of the Andromeda galaxy are used to check the validity of this method. The resulting list of wavelet detections now contains 235 sky regions. This list will be used in future works for more detailed spectral analysis. We thank the referee, Dr. Oleksiy Agapitov, for the comments that significantly improved the quality of the paper. This work has been partially supported from the Swiss National Science Foundation grant SCOPE IZ7370-152581, the grant No. F64/42-2015 of the State Fund for Fundamental Research of Ukraine, the Program of Cosmic Research of the National Academy of Sciences of Ukraine, and the State Programme of Implementation of Grid Technology in Ukraine. en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Identification of the ~3.55 keV emission line candidate objects across the sky Article published earlier |
| spellingShingle | Identification of the ~3.55 keV emission line candidate objects across the sky Savchenko, D.O. Iakubovskyi, D.A. |
| title | Identification of the ~3.55 keV emission line candidate objects across the sky |
| title_full | Identification of the ~3.55 keV emission line candidate objects across the sky |
| title_fullStr | Identification of the ~3.55 keV emission line candidate objects across the sky |
| title_full_unstemmed | Identification of the ~3.55 keV emission line candidate objects across the sky |
| title_short | Identification of the ~3.55 keV emission line candidate objects across the sky |
| title_sort | identification of the ~3.55 kev emission line candidate objects across the sky |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119931 |
| work_keys_str_mv | AT savchenkodo identificationofthe355kevemissionlinecandidateobjectsacrossthesky AT iakubovskyida identificationofthe355kevemissionlinecandidateobjectsacrossthesky |