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Chandra View of Magnetically Confined Wind in HD191612: Theory versus Observations
Yael Naze, Asif ud-Doula, Svetozar A. Zhekov
High-resolution spectra of the magnetic star HD191612 were acquired using the Chandra X-ray observatory at both maximum and minimum emission phases. We confirm the flux and hardnes…
Chandra Observes the End of an Era SN 1987A
Kari A. Frank, Svetozar A. Zhekov, Sangwook Park +3
Updated imaging and photometric results from Chandra observations of SN 1987A, covering the last 16 years, are presented. We find that the 0.5-2 keV light curve has remained consta…
Recent X-Recent X-ray observations of the symbiotic star AG Peg: do they signify Colliding Stellar Winds?
Svetozar A. Zhekov, Toma Tomov
We present an analysis of recent X-ray observations of the symbiotic star AG Peg. The X-ray emission of AG Peg as observed with Swift in 2015 shows considerable variability on time…