Technical comment on the paper of Dessert et al. "The dark matter interpretation of the 3.5 keV line is inconsistent with blank-sky observations"
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Technical comment on the paper of Dessert et al. "The dark matter interpretation of the 3.5 keV line is inconsistent with blank-sky observations". / Boyarsky, Alexey; Malyshev, Denys; Ruchayskiy, Oleg; Savchenko, Denys.
I: SciPost Astronomy Core, Bind 1, Nr. 1, 001, 04.05.2021.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Technical comment on the paper of Dessert et al. "The dark matter interpretation of the 3.5 keV line is inconsistent with blank-sky observations"
AU - Boyarsky, Alexey
AU - Malyshev, Denys
AU - Ruchayskiy, Oleg
AU - Savchenko, Denys
PY - 2021/5/4
Y1 - 2021/5/4
N2 - An unidentified line at energy around 3.5 keV was detected in the spectra of dark matter-dominated objects. Recent work of Dessert et al. [1812.06976] used 30 Msec of XMM-Newton blank-sky observations to constrain the admissible line flux, challenging its dark matter decay origin. We demonstrate that these bounds are overestimated by more than an order of magnitude due to improper background modeling. Therefore the dark matter interpretation of the 3.5 keV signal remains viable.
AB - An unidentified line at energy around 3.5 keV was detected in the spectra of dark matter-dominated objects. Recent work of Dessert et al. [1812.06976] used 30 Msec of XMM-Newton blank-sky observations to constrain the admissible line flux, challenging its dark matter decay origin. We demonstrate that these bounds are overestimated by more than an order of magnitude due to improper background modeling. Therefore the dark matter interpretation of the 3.5 keV signal remains viable.
U2 - 10.21468/SciPostAstroCore.1.1.001
DO - 10.21468/SciPostAstroCore.1.1.001
M3 - Journal article
VL - 1
JO - SciPost Astronomy Core
JF - SciPost Astronomy Core
SN - 2772-6770
IS - 1
M1 - 001
ER -
ID: 276949633