into measurable timing delays. Very-high-energy gamma rays from sources such as gamma-ray bursts, pulsars, and active galactic nuclei are the ideal subjects for this research. However, detecting a delay is not enough to confirm a violation. Scientists...

forging massive planetary objects and stars from swirling clouds of dust. New computer simulations reveal that active galactic nuclei (AGN), which are known for their blinding brilliance and massive gravity, could harbor environments capable of birthing...

CERN’s first proton-oxygen collisions are providing physicists with a crucial new method to decode the cosmic particle showers raining down on Earth. Physicists have successfully simulated the initial moments of cosmic-ray cascades within the Large...

Astronomers discover a massive starless void in a distant galaxy, once mistaken for dust, may conceal a violent hidden phenomenon. Deep within the massive elliptical galaxy known as Abell 402‑BCG, researchers have uncovered a star‑free cavity spanning...

the cosmic record, among them two objects that now hold the title of the earliest quasars ever detected. These luminous galactic nuclei were already blazing when the universe was merely five percent of its present age. Designated EUCL...

these light echoes, researchers have secured a powerful new diagnostic tool to investigate the inner workings of active galactic nuclei. Features of the reverberation response function detected during the X-ray flares. (CREDIT: Dan Wilkins et al,...

researchers have utilized Very Long Baseline Interferometry (VLBI) to map the gargantuan jets emitted by active galactic nuclei. While these radio observations have provided critical insights into the physics of supermassive black holes, they have...

ensuring the scientific community has reliable, calibrated access to the data. Beyond standard observations of active galactic nuclei and cosmic accelerators, the project is designed to provide the sensitivity required for high-stakes searches,...

Wang, Sebastian Heinz, and Alexander Tchekhovskoy, the research models how ancient radio bubbles left behind by active galactic nuclei (AGN) can be violently compressed and re-energized by passing shock waves. Tracing the Life Cycle of Cosmic Bubbles...

sources in the early universe, sparking debate over whether they represent tiny, dust‑rich galaxies, obscured active galactic nuclei, or hybrid systems containing stars, dust, and black‑hole activity. MoM‑BH*‑1 offers a concrete example where stars...

Muchachos Observatory in La Palma, Spain. OP 313 is classified as a flat-spectrum radio quasar, a member of the active galactic nuclei family. These objects are driven by supermassive black holes at their cores that voraciously consume surrounding...

of cataclysmic stellar deaths. This multidisciplinary approach has been essential in characterizing black holes, active galactic nuclei, and various high-energy phenomena. The partnership with the Chandra X-ray Observatory further amplified this impact,...

A fresh analysis of galactic archives suggests that decades of evidence for a high-mass radio excess may be an observational illusion. A fundamental law linking black hole mass to radio and X-ray emissions breaks down or holds firm at the extreme mass...

Astronomers suggest distant binary Cygnus X-3 may power the Cygnus Bubble’s highest‑energy gamma rays, challenging the usual link to nearby Cygnus X and OB2. A fresh analysis zeroes in on gamma‑ray photons above 400 tera‑electronvolts, proposing that...

A faint cosmic signal could unlock the hunt for fast‑moving supermassive black holes traveling across the universe for millions of years. A fresh analysis suggests that the dusty shroud surrounding quasars could serve as a beacon for identifying...

pipeline validation. At the same time the scientists are explicit about current limitations. The catalogue lacks active galactic nuclei (AGN), it uses relatively simple analytic prescriptions for galaxy positions and velocities that omit internal...

specifically on the light signatures of tidal disruption events (TDEs). Unlike conventional searches that focus on galactic nuclei, the program surveyed the full sky, allowing it to flag a bright, short‑lived flare three months after its launch in...

the high-spin group indicates that alternative astrophysical channels, such as accretion-driven spin-up in active galactic nuclei disks or complex stellar interactions, may also be at play. As gravitational wave observatories continue to improve and...