Locatelli N, Ponti G, Zheng X, Merloni A, Becker W, Comparat J, Dennerl K, Freyberg MJ, Sasaki M, Yeung MC (2024)
Publication Type: Journal article
Publication year: 2024
Book Volume: 681
Article Number: A78
DOI: 10.1051/0004-6361/202347061
The first all-sky maps of the diffuse emission of high ionization lines observed in X-rays by SRG/eROSITA provide an excellent probe for the study of the warm-hot phase (T ∼ 106 K) of the circumgalactic medium (CGM) of the Milky Way. In this work, we analyze the O VIII line detected in the first eROSITA All-Sky Survey data (eRASS1). We fit a sky map made in a narrow energy bin around this line with physical emission models embedded in a 3D geometry in order to constrain the density distribution of the warm-hot gas around the Galaxy, with a focus on mid and high (absolute) Galactic latitudes. By masking out the eROSITA bubbles and other bright, extended foreground sources, we find that an oblate geometry of the warm-hot gas (T ≡ 0.15−0.17 keV), flattened around the Galactic disk with scale height z
APA:
Locatelli, N., Ponti, G., Zheng, X., Merloni, A., Becker, W., Comparat, J.,... Yeung, M.C. (2024). The warm-hot circumgalactic medium of the Milky Way as seen by eROSITA. Astronomy & Astrophysics, 681. https://doi.org/10.1051/0004-6361/202347061
MLA:
Locatelli, N., et al. "The warm-hot circumgalactic medium of the Milky Way as seen by eROSITA." Astronomy & Astrophysics 681 (2024).
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