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116 papers
Latest Evolution of the X-Ray Remnant of SN 1987A: Beyond the Inner Ring
Aravind P. Ravi, Sangwook Park, Svetozar A. Zhekov +5
Based on our Chandra imaging-spectroscopic observations, we present the latest evolution of the X-ray remnant of SN 1987A. Recent changes in the electron temperatures and volume em…
The 3-D X-ray Ejecta Structure of Tycho's Supernova Remnant
Matthew J. Millard, Sangwook Park, Toshiki Sato +5
We present our velocity measurements of 59 clumpy, metal-rich ejecta knots in the supernova remnant (SNR) of SN 1572 (Tycho). We use our 450 ks Chandra High Energy Transmission Gra…
Towards precision particle background estimation for future X-ray missions: correlated variability between Chandra ACIS and AMS
Catherine E. Grant, Eric D. Miller, Marshall W. Bautz +4
A science goal of many future X-ray observatories is mapping the cosmic web through deep exposures of faint diffuse sources. Such observations require low background and the best p…
Mitigating the effects of particle background on the Athena Wide-Field Imager
Eric D. Miller, Catherine E. Grant, Marshall W. Bautz +16
The Wide Field Imager (WFI) flying on Athena will usher in the next era of studying the hot and energetic Universe. WFI observations of faint, diffuse sources will be limited by un…
Measuring the Quantum Efficiency of X-Ray Hybrid CMOS Detectors
Joseph M. Colosimo, Abraham D. Falcone, Mitchell Wages +7
Next-generation X-ray observatories, such as the Lynx X-ray Observatory Mission Concept, will require detectors with high quantum efficiency (QE) across the soft X-ray band to obse…
Spectral Evolution of the X-Ray Remnant of SN 1987A: A High-Resolution HETG Study
Aravind P. Ravi, Sangwook Park, Svetozar A. Zhekov +4
Based on observations with the X-ray Observatory, we present the latest spectral evolution of the X-ray remnant of SN 1987A (SNR 1987A). We present a high-resolution spec…