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Showing news items 151 - 160 of 638
Artist impression of GRB 161219B
Enduring ‘Radio Rebound’ Powered by Jets from Gamma-Ray Burst
July 26, 2018 at 11:00 am | News Release

Astronomers using ALMA studied a cataclysmic stellar explosion known as a gamma-ray burst, or GRB, and found its enduring “afterglow.” The rebound, or reverse shock, triggered by the GRB’s powerful jets slamming into surrounding debris, lasted thousands of times longer than expected.

Blazar diagram
VLA Gives Tantalizing Clues About Source of Energetic Cosmic Neutrino
July 12, 2018 at 11:00 am | News Release

The track of an elusive, energetic neutrino points to a distant galaxy as its source and VLA observations suggest high-energy particles may be generated in superfast jets of material near the galaxy’s core.

VLBA continuum image of QSO P352–15
Distant Quasar Providing Clues to Early-Universe Conditions
July 9, 2018 at 9:00 am | News Release

The sharp radio “vision” of the VLBA gives astronomers a detailed look at a galaxy as it appeared when the Universe was a small fraction of its current age, giving clues about conditions at that early time.

Artist impression of PSR J0337+1715
Even Phenomenally Dense Neutron Stars Fall like a Feather
July 4, 2018 at 1:00 pm | News Release

Harnessing the exquisite sensitivity of the GBT, astronomers have given one of Einstein’s predictions on gravity its most stringent test yet. By precisely tracking the meanderings of three stars in a single system – two white dwarf stars and one ultra-dense neutron star – the researchers determined that even the most massive of objects “fall” in the same manner as their less-dense counterparts.

Tidal Disruption Event
Astronomers See Distant Eruption as Black Hole Destroys Star
June 14, 2018 at 2:00 pm | News Release

Years-long observation program surprises astronomers with evidence of a star’s violent death near the core of a distant galaxy.

Artist impression of protoplanets forming around a young star.
Trio of Infant Planets Discovered around Newborn Star
June 13, 2018 at 10:00 am | News Release

Two independent teams of astronomers have uncovered convincing evidence that three young planets are in orbit around an infant star known as HD 163296. Using a new planet-finding strategy, the astronomers identified three discrete disturbances in a young star’s gas-filled disk: the strongest evidence yet that newly formed planets are in orbit there.

Showing news items 151 - 160 of 638