567 citations · 3.3k across the 76 of their papers we have counts for
79 papers
The extremely X-ray luminous radio-loud quasar CFHQS J142952+544717 at under Chandra high-angular resolution lens
G. Migliori, A. Siemiginowska, M. Sobolewska +6
We present the first X-ray observation at sub-arcsecond resolution of the high-redshift () radio-loud quasar CFHQS J142952+544717 (J1429). The ~100 net-count 0.3-7 keV spec…
A novel approach to detect line emission under high background in high-resolution X-ray spectra
Xiangyu Zhang, Sara Algeri, Vinay Kashyap +1
We develop a novel statistical approach to identify emission features or set upper limits in high-resolution spectra in the presence of high background. The method relies on detect…
Shocks and Photoionization of the Inner 650 AU Jet of the Interacting Binary Star R Aquarii from Multiwavelength Hubble Space Telescope Observations
Caroline D. Huang, Margarita Karovska, Warren Hack +3
Astrophysical jets are present in a range of environments, including young stellar objects, X-ray binaries, and active galactic nuclei, but their formation is still not fully under…
Center to limb variation of transition region Doppler shift in active regions
Abhishek Rajhans, Durgesh Tripathi, Vinay L. Kashyap +2
Studying Doppler shifts provides deeper insights into the flow of mass and energy in the solar atmosphere. We perform a comprehensive measurement of Doppler shifts in the transitio…
X-ray Activity Variations and Coronal Abundances of the Star-Planet Interaction candidate HD 179949
Anshuman Acharya, Vinay L. Kashyap, Steven H. Saar +2
We carry out detailed spectral and timing analyses of the X-ray data of HD 179949, a prototypical example of a star with a close-in giant planet with possible star-planet…
Identifying diffuse spatial structures in high-energy photon lists
Minjie Fan, Jue Wang, Vinay L. Kashyap +3
Data from high-energy observations are usually obtained as lists of photon events. A common analysis task for such data is to identify whether diffuse emission exists, and to estim…