Surface brightness profile of the 3.5 keV line in the Milky Way halo
A. Boyarsky, D. Iakubovskyi, O. Ruchayskiy, D. Savchenko
TL;DR
This paper reports the detection of a 3.5 keV emission line in the Milky Way halo across multiple regions, analyzing its spatial profile and comparing it with astrophysical lines and previous observations.
Contribution
It provides the first detailed angular profile of the 3.5 keV line in the Milky Way halo and compares it with other astrophysical signals and prior bounds.
Findings
Detection of 3.5 keV line in 5 regions offset from Galactic Center
Angular profile of the 3.5 keV line constructed and analyzed
Comparison with astrophysical lines and previous bounds conducted
Abstract
We report a detection of 3.5 keV line in the Milky Way in 5 regions offset from the Galactic Center by distances from 10' to 35 degrees. We build an angular profile of this line and compare it with profiles of several astrophysical lines detected in the same observations. We compare our results with other detections and bounds previously obtained using observations of the Milky Way.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Galaxies: Formation, Evolution, Phenomena · Radio Astronomy Observations and Technology