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Searching for the 3.5 keV Line in the Deep Fields with Chandra: the 10 Ms observations
Nico Cappelluti, Esra Bulbul, Adam Foster +6
In this paper we report a systematic search for an emission line around 3.5 keV in the spectrum of the Cosmic X-ray Background using a total of 10 Ms Chandra observations tow…
Radial Profile of the 3.55 keV line out to in the Perseus Cluster
Jeroen Franse, Esra Bulbul, Adam Foster +10
The recent discovery of the unidentified emission line at 3.55 keV in galaxies and clusters has attracted great interest from the community. As the origin of the line remains uncer…
Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters
Esra Bulbul, Maxim Markevitch, Adam Foster +3
We detect a weak unidentified emission line at E=(3.55-3.57)+/-0.03 keV in a stacked XMM spectrum of 73 galaxy clusters spanning a redshift range 0.01-0.35. MOS and PN observations…
High Resolution XMM-Newton Spectroscopy of the Cooling Flow Cluster A3112
Esra Bulbul, Randall Smith, Adam Foster +4
We examine high signal to noise XMM-Newton European Photon Imaging Camera (EPIC) and Reflection Grating Spectrometer (RGS) observations to determine the physical characteristics of…