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The Norma Arm Region Chandra Survey: X-ray Populations in the Spiral Arms
Francesca M. Fornasini, John A. Tomsick, Arash Bodaghee +6
We present a catalog of 1415 X-ray sources identified in the Norma arm region Chandra survey (NARCS), which covers a 2 deg x 0.8 deg region in the direction of the Norma spiral arm…
The variable hard X-ray emission of NGC4945 as observed by NuSTAR
Simonetta Puccetti, Andrea Comastri, Fabrizio Fiore +19
We present a broadband (~0.5-79 keV) spectral and temporal analysis of multiple NuSTAR observations combined with archival Suzaku and Chandra data of NGC4945, the brightest extraga…
A Geometrically Supported Candidate Multiply-Imaged by the Hubble Frontier Fields Cluster Abell 2744
Adi Zitrin, Wei Zheng, Tom Broadhurst +11
The deflection angles of lensed sources increase with their distance behind a given lens. We utilize this geometric effect to corroborate the photometric redshi…
Initial Results from NuSTAR Observations of the Norma Arm
Arash Bodaghee, John A. Tomsick, Roman Krivonos +12
Results are presented for an initial survey of the Norma Arm gathered with the focusing hard X-ray telescope NuSTAR. The survey covers 0.2 deg of sky area in the 3-79 keV range…
Near-infrared spectroscopy of 20 new Chandra sources in the Norma Arm
Farid Rahoui, John A. Tomsick, Francesca M. Fornasini +2
We report on CTIO/NEWFIRM and CTIO/OSIRIS photometric and spectroscopic observations of 20 new X-ray (0.5-10 keV) emitters discovered in the Norma Arm Region Chandra Survey (NARCS)…
The AGN Population in X-ray Selected Galaxy Groups at
Semyeong Oh, John S. Mulchaey, Jong-Hak Woo +6
We use Chandra data to study the incidence and properties of Active Galactic Nuclei (AGN) in 16 intermediate redshift () X-ray-selected galaxy groups in the Chandra…