Results 71 to 80 of about 1,428 (186)
First Detection of the Doppler Shift of X-Ray Photons Due to a Telescope’s Orbital Motion
The Astrophysical JournalWe have detected for the first time the redshifting and blueshifting of X-ray photons due to the orbital motion of an X-ray telescope around the Earth. Current and planned X-ray telescopes like XRISM/Resolve and NewAthena can achieve energy resolutions R
Stephen DiKerby, Shuo Zhang
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AerospaceThe X-ray satellite “Einstein Probe” of the Chinese Academy of Sciences (CAS) was successfully launched on 9 January 2024 at 15:03 Beijing Time from the Xichang Satellite Launch Center in China with a “Long March-2C” rocket.
Jiadai Xue +14 more
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SAUNAS. I. Searching for Low Surface Brightness X-Ray Emission with Chandra/ACIS
The Astrophysical JournalWe present Selective Amplification of Ultra Noisy Astronomical Signal ( SAUNAS ), a pipeline designed for detecting diffuse X-ray emission in the data obtained with the Advanced CCD Imaging Spectrometer (ACIS) of the Chandra X-ray Observatory.
Alejandro S. Borlaff +10 more
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Clustering of X-Ray-Selected AGN
Advances in Astronomy, 2012 The study of the angular and spatial structure of the X-ray sky has been under investigation since the times of the Einstein X-ray Observatory. This topic has fascinated more than two generations of scientists and slowly unveiled an unexpected scenario ...
N. Cappelluti +2 more
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In-flight Timing Calibration of the Follow-up X-Ray Telescope on Board the Einstein Probe
The Astrophysical Journal Supplement SeriesAfter the launch of the Einstein Probe, pulsars are observed to calibrate the timing system of the onboard Follow-up X-ray Telescope (FXT) by measuring the times of arrival (TOAs).
Juan Zhang +20 more
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Evaluating Proton Intensities for the SMILE Mission
Space WeatherThis study introduces five linear regression models developed to accurately predict proton intensities in the critical energy range of 92.2–159.7 keV. To achieve this task we utilized 14 years of data sourced from the Cluster's RAPID experiment and NASA ...
Simon Mischel +2 more
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The Rockets for Extended-source X-ray Spectroscopy Instrument Design
The Astrophysical JournalThe Rockets for Extended-source X-ray Spectroscopy (tREXS) are a series of suborbital rocket payloads designed to collect spectral emission from extended astronomical sources of soft X-rays. The tREXS spectrograph uses mechanical beam-shaping modules and
Drew M. Miles +7 more
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Planetary Nebulae in the eROSITA eRASS1 Catalog
The Astrophysical JournalSome planetary nebulae (PNs) host X-ray-emitting hot bubbles shaped by stellar wind interactions and/or harbor X-ray-emitting central stars due to accretion, shocks within their fast stellar winds, or even chromospheric emission from binary companions ...
Haoyang Yuan +3 more
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The Astrophysical Journal Supplement SeriesIn this paper, we present a comprehensive catalog of short bursts from magnetars based on 8 yr of NICER observations. A total of 1130 bursts were identified from 14 sources, with the sample dominated by SGR 1935+2154, which accounts for 76% of all ...
Che-Yen Chu +16 more
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Probing ultralight primordial black hole dark matter with XMM telescopes
Nuclear Physics BPrimordial black holes (PBHs), originating from the gravitational collapse of large overdensities in the early Universe, emerge as a compelling dark matter (DM) candidate across a broad mass range.
Jun Guo, Qiang Yuan, Bin Zhu
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