CMNS: GRB Captured in Unprecedented Detail
Posted: Wed Jul 26, 2017 6:14 pm
Gamma-ray Burst Captured in Unprecedented Detail
College of Computer, Mathematical, and Natural Sciences
University of Maryland, College Park | 2017 Jul 26
Massive Star's Dying Blast Caught By Rapid-Response Telescopes
Arizona State University | 2017 Jul 26
Significant and variable linear polarization during the prompt optical flash of GRB 160625B - E. Troja et al
College of Computer, Mathematical, and Natural Sciences
University of Maryland, College Park | 2017 Jul 26
[c][attachment=0]3504d083f5bf2ff82ad394dac9c408b4-450x450[1].gif[/attachment][/c][hr][/hr]UMD-led team uses data from multiple telescopes to address long-standing questions about the universe’s most powerful explosions
Gamma-ray bursts are among the most energetic and explosive events in the universe. They are also short-lived, lasting from a few milliseconds to about a minute. This has made it tough for astronomers to observe a gamma-ray burst in detail.
Using a wide array of ground- and space-based telescope observations, an international team led by University of Maryland astronomers constructed one of the most detailed descriptions of a gamma-ray burst to date. The event, named GRB 160625B, revealed key details about the initial “prompt” phase of gamma-ray bursts and the evolution of the large jets of matter and energy that form as a result of the burst. ...
The group’s observations provide the first answers to some long-standing questions about how a gamma-ray burst evolves as the dying star collapses to become a black hole. First, the data suggest that the black hole produces a strong magnetic field that initially dominates the energy emission jets. Then, as the magnetic field breaks down, matter takes over and begins to dominate the jets. Most gamma-ray burst researchers thought that the jets were dominated by either matter or the magnetic field, but not both. The current results suggest that both factors play key roles. ...
Massive Star's Dying Blast Caught By Rapid-Response Telescopes
Arizona State University | 2017 Jul 26
A blast of gamma rays from space detected in June 2016 is helping astronomers resolve long-standing questions about the universe's most powerful explosions. ...
Significant and variable linear polarization during the prompt optical flash of GRB 160625B - E. Troja et al
- Nature (online 26 Jul 2017) DOI: 10.1038/nature23289