211 citations · 1.2k across the 56 of their papers we have counts for
8 papers · 1 filter
Population of X-ray Sources in the Intermediate-Age Cluster NGC 3532: a Test Bed for Machine-Learning Classification
Steven Chen, Oleg Kargaltsev, Hui Yang +4
Open clusters are thought to be the birth place of most stars in the Galaxy. Thus, they are excellent laboratories for investigating stellar evolution, and X-ray properties of vari…
XMM-Newton and Chandra observations of the candidate Fermi-LAT pulsar 4FGL J1015.5-6030
Jeremy Hare, Oleg Kargaltsev, George Younes +2
4FGL J1015.5-6030 is an unidentified Fermi-LAT source hosting a bright, extended X-ray source whose X-ray spectrum is consistent with that of a young pulsar, yet no pulsations have…
A Quarter Century of Guitar Nebula/Filament Evolution
Martijn de Vries, Roger W. Romani, Oleg Kargaltsev +6
We have collected a new deep {\it Chandra X-ray Observatory} ({\it CXO}) exposure of PSR B2224+65 and the `Guitar Nebula', mapping the complex X-ray structure. This is accompanied…
Catalog of X-ray Detected Be Stars (XDBS)
Caden Gobat, Hui Yang, Oleg Kargaltsev +2
We present a catalog of X-ray Detected Be Stars (XDBS) with 161 Be stars from the Be Star Spectra (BeSS) database having X-ray counterparts in the Chandra Source Catalog v2.0, XMM-…
Search for extended sources in the images from Chandra X-ray Observatory Advanced CCD Imaging Spectrometer
Igor Volkov, Oleg Kargaltsev
We present a convenient tool (ChaSES) which allows to search for extended structures in Chandra X-ray Observatory Advanced CCD Imaging Spectrometer (ACIS) images. The tool relies o…
Classifying Unidentified X-ray Sources in the Chandra Source Catalog Using a Multiwavelength Machine-learning Approach
Hui Yang, Jeremy Hare, Oleg Kargaltsev +3
The rapid increase in serendipitous X-ray source detections requires the development of novel approaches to efficiently explore the nature of X-ray sources. If even a fraction of t…