X-ray astronomy is the research area focused on detecting, imaging, and spectroscopically analyzing cosmic sources of X-ray photons, typically in the energy range of ~0.1–100 keV. Because Earth’s atmosphere is opaque to X-rays, this field relies on space-based observatories employing grazing-incidence optics, focusing telescopes, and high-resolution detectors such as CCDs, microcalorimeters, and proportional counters. X-ray astronomy probes high-energy astrophysical processes, including accretion onto compact objects, hot intracluster gas, supernova remnants, stellar coronae, and relativistic jets, enabling quantitative studies of extreme environments, plasma conditions, strong gravity, and energetic feedback in galaxies and large-scale structure.
Astronomers from the University of Turku in Finland and elsewhere have performed a broadband spectral and timing study of an X-ray binary designated XTE J0111.2−7317, which resulted in the detection of quasi-periodic oscillations ...
An international team of astronomers has employed various satellites and ground-based telescopes to perform multiwavelength observations of a supernova remnant known as SNR J0450.4−7050. Results of the observational campaign, ...
Using NASA's Chandra spacecraft and ESA's XMM-Newton satellite, astronomers have investigated the galaxy NGC 7793, searching for supernova remnants (SNRs). As a result, they discovered four new X-ray SNRs in this galaxy. ...
Using the Hard X-ray Modulation Telescope (HXMT), Chinese astronomers have observed an X-ray binary system designated IGR J19294+1816. As a result, they discovered multiple X-ray quasi-periodic oscillations in this source. ...
A black hole has blasted out a surprisingly powerful jet in the distant universe, according to a new study from NASA's Chandra X-ray Observatory. This jet exists early enough in the cosmos that it is being illuminated by ...
Astronomy
Jun 10, 2025
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The ongoing search for dark matter, the elusive type of matter that does not emit, absorb or reflect light and is estimated to account for most of the universe's mass, has not yet yielded conclusive results. Axions, hypothetical ...
What happens when the universe's most magnetic object shines with the power of 1000 suns in a matter of seconds? Thanks to NASA's IXPE (Imaging X‑ray Polarimetry Explorer), a mission in collaboration with ASI (Italian Space ...
Astronomy
Jun 5, 2025
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New observations from NASA's Chandra X-ray Observatory and other telescopes have captured a rare cosmic event: Two galaxy clusters have collided and are now poised to head back for another swipe at each other.
Astronomy
Jun 4, 2025
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Astronomers from the International Center for Radio Astronomy Research (ICRAR), in collaboration with international teams, have made a startling discovery about a new type of cosmic phenomenon.
Astronomy
May 28, 2025
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An international team of astronomers using the Einstein Probe reports the discovery of a new peculiar fast-evolving X-transient. The newfound transient exhibits an unprecedented long-lasting X-ray emission. The finding was ...
