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періодичних видань НАН України
Identification of the ~3.55 keV emission line candidate objects across the sky
Репозиторій DSpace/Manakin
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Identification of the ~3.55 keV emission line candidate objects across the sky
Інший ID:
DOI:10.17721/2227-1481.5.89-92
Посилання:
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.
Підтримка:
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.
Дата:
2015
Переглядів:
760
Завантажень:
492
Анотація:
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.
