Tag Archive for 'Gamma-Ray Burst'

Catastrophic Collapse of Giant Stars’ Magnetic Fields Powers Gamma-Ray Bursts

Apr 9, 2020 by News Staff

Gamma-ray bursts are the most energetic explosions in the Universe, beaming out huge jets of light-emitting plasma, which travel through space at 0.99...

Astronomers Observe Host Galaxy of Extremely Bright and Long Gamma-Ray Burst

Nov 21, 2019 by News Staff

Astronomers have investigated the nature of a very bright and long-duration gamma-ray burst, GRB 190114C, by studying its environment. Hubble’s observations...

An artist’s impression of a blazar. Image credit: DESY / Science Communication Lab.

Do Gamma-Ray Jets Really Achieve Superluminal Speeds?

Sep 26, 2019 by News Staff

High-speed particle jets from gamma-ray bursts may exceed the speed of light in surrounding gas clouds, but do so without violating Einstein’s theory...

GRB 160821B occurred in the outskirts of a spiral galaxy about two billion light-years away, at a projected offset of 52,185 light-years from the galaxy’s center. Image credit: Troja et al, doi: 10.1093/mnras/stz2255.

Astronomers Detect New Kilonova Explosion

Aug 28, 2019 by News Staff

Astronomers have re-examined data from GRB 160821B, a short duration gamma-ray burst spotted on August 21, 2016, and found evidence for a kilonova, an...

An artist’s impression of the GRB 190114C jet over time, and the small patches of magnetic fields. Image credit: Laskar et al.

Astronomers Capture First Polarized Radio Signal from Gamma-Ray Burst

Jun 21, 2019 by News Staff

Gamma-ray bursts (GRBs) are the most energetic explosions in the Universe, beaming out mighty jets which travel through space at 0.99 times the speed of...

The VISIR instrument on ESO’s Very Large Telescope captured this stunning image of the 2XMM J160050.7-514245 system. Image credit: ESO / Callingham et al.

Astronomers Find Potential Gamma-Ray Burst Progenitor

Nov 22, 2018 by News Staff

Astronomers using ESO’s Very Large Telescope have observed an elaborate serpentine system sculpted by colliding stellar winds. The object, called 2XMM...

This image shows data from NASA’s Chandra X-ray Observatory (purple in the inset boxes) in context with an optical image of GRB 150101B from the NASA/ESA Hubble Space Telescope. Image credit: X-rays – NASA / CXC / GSFC / UMC / E. Troja et al; optical and infrared – NASA / STScI.

Astronomers Find Object with Remarkable Similarities to Neutron-Star Merger GW170817

Oct 17, 2018 by News Staff

A distant relative to GW170817, the first source identified to emit gravitational waves and light, has been discovered. Reported in the journal Nature...

An artist’s impression of a jet emanating from NGC 4993. Image credit: J.A. Biretta et al / NASA / ESA / Hubble Heritage Team / STScI / AURA / Sci-News.com.

Jet from Neutron-Star Merger GW170817 Appeared to Move Four Times Faster than Light

Sep 12, 2018 by News Staff

Radio observations using a combination of NSF’s Very Long Baseline Array, the Karl G. Jansky Very Large Array and the Robert C. Byrd Green Bank Telescope...

An artist’s impression of a gamma-ray burst’s jet. Image credit: S. Wiessinger / NASA’s Goddard Space Flight Center.

Bright Gamma-Ray Burst Pulses Exhibit Time-Reversible Wavelike Structures

Aug 17, 2018 by News Staff

A research team headed by College of Charleston astrophysicist Jon Hakkila has discovered a peculiarity in the light curves of astronomical phenomena called...

This artist’s impression shows a gamma-ray burst in a star forming region. Image credit: L. Calçada / ESO.

Physicists Create Mini Gamma-Ray Burst in the Lab

Jan 24, 2018 by News Staff

An international team of physicists has created the first small-scale replica of gamma ray bursts in a laboratory, opening up a whole new way to investigate...

This image, taken with the Wide-Field Camera 3 (WFC3) on board the NASA/ESA Hubble Space Telescope, shows the spiral galaxy LEDA 53183. Three filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble.

Hubble Sees Explosive Spiral Galaxy: LEDA 53183

Dec 4, 2017 by News Staff

The NASA/ESA Hubble Space Telescope has delivered an unrivalled snapshot of a spiral galaxy called LEDA 53183. This image, taken with the Wide-Field Camera...

Artist’s illustration of two merging neutron stars. Image credit: NSF / LIGO / Sonoma State University / A. Simonnet.

Scientists Detect Gravitational Waves from Colliding Neutron Stars

Oct 17, 2017 by News Staff

The LIGO Scientific Collaboration, Virgo Collaboration, and their partners have directly detected gravitational waves — ripples in space and time...

This scanning electron microscope image shows a tardigrade. Image credit: Diane Nelson, National Park Service, U.S. Department of the Interior.

Earth’s Most Indestructible Creature Identified: Tardigrade

Jul 14, 2017 by News Staff

Water-dwelling, eight-legged, segmented micro-animals called tardigrades will survive the risk of extinction from all astrophysical catastrophes, and be...

CDF-S XT1 became 1,000 times brighter over a few hours before fading dramatically in about a day. Image credit: NASA / CXC / Pontifical Catholic University / F.Bauer et al.

NASA’s Chandra Observatory Records Mysterious Explosion 10.7 Billion Light-Years Away

Mar 31, 2017 by News Staff

An international team of astronomers have discovered a mysterious flash of X-rays using NASA’s Chandra X-ray Observatory, in the deepest X-ray image...

An image of the distribution of GRBs on the sky at a distance of 9 billion light-years, centered on the newly-discovered ring-like structure; the positions of the GRBs are marked by blue dots, and the Milky Way is indicated for reference, running from left to right across the image. Image credit: Lajos Balazs.

Astronomers Discover Ring-Like Structure 5.6 Billion Light-Years Across

Aug 5, 2015 by News Staff

A team of astronomers from Hungary and the United States has announced the discovery of the largest regular formation in the observable Universe –...

This artist’s impression shows a supernova and associated gamma-ray burst driven by a rapidly spinning magnetar. Image credit: ESO.

Ultra-Long Gamma-Ray Bursts are Driven by Magnetars, Astronomers Say

Jul 9, 2015 by News Staff

A team of astronomers led by Dr Jochen Greiner of the Max Planck Institute for Extraterrestrial Physics, Germany, has demonstrated a link between the bright...

Images of SN 2012ap and its host galaxy, NGC 1729. Image credit: D. Milisavljevic et al.

SN 2012ap: Astronomers Find ‘Missing Link’ in Supernova Family Tree

Apr 28, 2015 by News Staff

Supernova SN 2012ap is a ‘missing link’ between stellar explosions that generate gamma-ray bursts and those that don’t, says a group of astronomers...

Artist conception of a magnetar – one of the proposed sources for fast radio bursts. Image credit: NASA.

FRB 140514: Astronomers Observe First ‘Live’ Fast Radio Burst

Jan 20, 2015 by News Staff

A multinational group of astronomers using the 64-m Parkes Radio Telescope in eastern Australia has observed a fast radio burst happening live. Artist...

This is an artist's impression of a gamma-ray burst. Image credit: NASA.

Astronomers Discover New Kind of Gamma-Ray Burst

Dec 24, 2013 by News Staff

Australian researchers have discovered a new type of gamma-ray burst (GRB) called radio faint GRB. This is an artist’s impression of a gamma-ray...

Optical afterglow of GRB 130427A. Image credit: J. Mats / H. Lars / H. Patrik.

GRB 130427A: Brightest Ever Gamma-Ray Burst Detected

Nov 21, 2013 by News Staff

An unusual stellar explosion observed on April 27, 2013 by NASA’s Swift satellite is the brightest gamma-ray burst (GRB) ever recorded, says a multinational...

123