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Brown Dwarf Artist's Conception
VLA Detects Possible Extrasolar Planetary-Mass Magnetic Powerhouse
August 2, 2018 at 6:33 pm | News Release

Astronomers have used the VLA to detect a possible planetary-mass object with a surprisingly powerful magnetic field some 20 light-years from Earth. It can help scientists better understand magnetic processes on stars and planets.

Artist impression of the collision of two stars
Pair of Colliding Stars Spill Radioactive Molecules into Space
July 30, 2018 at 11:00 am | News Release

Astronomers have made the first definitive detection of a radioactive molecule in interstellar space: a form, or isotopologue of aluminum monofluoride. The new data reveal that this radioactive isotopologue was created by the collision of two stars, a tremendously rare cosmic event that was witnessed on Earth as a “new star,” or nova, in the year 1670.

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.

Showing news items 61 - 70 of 584