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Article overview
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X-ray Sources in the Dwarf Spheroidal Galaxy Draco | | E. Sonbas
; B. Rangelov
; O. Kargaltsev
; K.S. Dhuga
; J. Hare
; | | Date: |
1 May 2015 | | Abstract: | We present the spectral analysis of an 87~ks emph{XMM-Newton} observation of
Draco, a nearby dwarf spheroidal galaxy. Of the approximately 35 robust X-ray
source detections, we focus our attention on the brightest of these sources,
for which we report X-ray and multi-wavelength parameters. While most of the
sources exhibit properties consistent with AGN, few of them possess
characteristics of LMXBs and CVs. Our analysis puts constraints on population
of X-ray sources with $L_X>3 imes10^{33}$~erg~s$^{-1}$ in Draco suggesting
that there are no actively accreting BH and NS binaries although at least 3
LMXBs/CVs in quiescent state are likely to be associated with Draco. We also
place constraints on the central black hole luminosity and on a dark matter
decay signal around 3.5~keV. | | Source: | arXiv, 1505.0216 | | Services: | Forum | Review | PDF | Favorites | |
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