Sentences with phrase «burst afterglows»

The circumstellar environment of Wolf - Rayet stars and gamma - ray burst afterglows.

Related sites Gamma ray burst afterglows Optical Observations of GRBs An explanation of microlensing Joining the GRB Network as an amateur

This was the first time that such rapid measurement of a burst afterglow was made.

Not exact matches

To confirm that finding, the Hubble Space Telescope obtained visible - light images of this galaxy and the burst's afterglow (image, top).

Eleven hours after the burst, the XMM - Newton telescope began observing GRB011211's so - called afterglow.

These telescopes, along with Swift's own UV / Optical Telescope and other robotic telescopes alerted by the satellites, monitored the six - week afterglow of visible light following the burst.

Researchers have found that short gamma - ray bursts — those that last a couple of seconds or less — have brighter afterglows than the simple, reigning model of afterglow emission predicts.

Another orbiting eye on the cosmos, the Compton Gamma - Ray Observatory, which was launched in 1991, recorded the transient afterglow of a mysterious gamma ray burst.

NASA's Swift satellite picked up the short - lived burst Thursday — gamma - ray bursts usually last just minutes, even seconds — and a suite of follow - up observations of the explosion's afterglow at telescopes around the globe enabled an age estimate.

Last April astronomical detectives announced a break: An orbiting X-ray observatory picked up the chemical fingerprints of several elements in a burst's afterglow, identifying the object as an unusual type of supernova — the detonation of a massive, dying star.

The team used the Faint Object Camera and Spectrograph (FOCAS) mounted on the Subaru Telescope to thoroughly study the visible wavelength spectrum (Note 1) of the afterglow of a gamma - ray burst (GRB, Note 2), which is a violent explosion of a massive star.

Spectrum of gamma - ray burst's afterglow indicates beginning of re-ionization process.»

After detecting the initial flash, Swift focused on the burst's faint X-ray afterglow, a dim electromagnetic signal emitted when high - energy particles from the blast heat the surrounding material.

«Fast radio burst «afterglow» was actually a flickering black hole.»

(B) The burst leaves an optical afterglow.

Last February a team of astronomers reported detecting an afterglow from a mysterious event called a fast radio burst, which would pinpoint the precise position of the burst's origin, a longstanding goal in studies of these mysterious events.

New research by Harvard astronomers Peter Williams and Edo Berger shows that the radio emission believed to be an afterglow actually originated from a distant galaxy's core and was unassociated with the fast radio burst.

Now, two papers in the October 29 Nature present detailed analyses of the burst and afterglow, confirming the initial distance assessments and providing a few clues as to conditions in the early universe.

But astronomers may have pulled off an equally challenging feat: detecting the glimmer of a supernova explosion in the fading afterglow of a titanic gamma ray burst (GRB)-- one of the biggest type of explosions in all the cosmos.

Swift's X-Ray Telescope trained itself on GRB 090423 just 73 seconds after the satellite's Burst Alert instrument picked up the signal of the event, and Tanvir's team had the U.K. Infra - Red Telescope on Mauna Kea in Hawaii looking at the afterglow just 20 minutes after the bBurst Alert instrument picked up the signal of the event, and Tanvir's team had the U.K. Infra - Red Telescope on Mauna Kea in Hawaii looking at the afterglow just 20 minutes after the burstburst.

The burst and afterglow of GRB 090423 is not unlike that of closer (and hence more recent) gamma - ray bursts, pointing to a later - generation progenitor.

Other telescopes later measured the spectrum of the afterglow, revealing that the burst detonated about 13.1 billion light years from Earth.

Within an hour, astronomers began training ground - based telescopes on the same patch of sky to study the burst's infrared afterglow.

«It's the most distant gamma - ray burst, but it's also the most distant object in the universe overall,» says Edo Berger of the Harvard - Smithsonian Center for Astrophysics, a member of the team that observed the afterglow with Gemini North.

Some researchers theorized that these afterglows eluded detection because they occurred in a less dense region of a galaxy, where ejected material wouldn't have the opportunity to interact with lots of particles and produce a bright enough burst.

Two other teams, one lead by Derek Fox of Caltech and the other lead by Jens Hjorth of the University of Copenhagen, detected x-ray and optical afterglows from the burst.

Unfortunately, attempts to find the afterglow and therefore the source of short gamma - ray bursts proved fruitless.

Using a 2.2 - meter telescope at the European Southern Observatory in La Silla, Chile, a group led by Jochen Greiner at the Max Planck Institute for Extraterrestrial Physics in Garching, Germany, captured the bursts fading afterglow.

First limits on the very - high energy gamma - ray afterglow emission of a fast radio burst.

This allows it to study a variety of astronomical objects, such as the molecular gas in planetary nebulae, molecules on active comets, the heating mechanisms of red giants and the afterglows of gamma - ray bursts.

Quick follow - up observations undertaken with the 8.2 - m Antu instrument at European Southern Observatory's Very Large Telescope in the Paranal and the 1.5 - meter Danish telescope at La Silla identified a faint, point - like object in visible light that was fading rapidly, the optical counterpart of the gamma - ray burst called the «afterglow» (Pedersen et al, 2000).

By the time a spectrum of the gamma - ray burst's afterglow was obtained on February 8, 2000, its brightness had decreased further.

A specialized camera on a telescope operated by U.K. astronomers from Liverpool has made the first measurement of magnetic fields in the afterglow of a gamma - ray burst (GRB).

Although GRB 000131, like other gamma - ray bursts, appears to have taken place in a remote «early galaxy» (or «sub-galactic clumps» of stars) that is smaller than today's luminous galaxies, astronomers found it difficult to detect that extremely dim, sub-galactic clump of stars even with the Hubble Space Telescope, as the observed fading of the afterglow indicated that the maximum brightness of the gamma - ray emission was explosion was at least 10,000 times brighter than its host galaxy.

Its optical afterglow was detected 84 hours after burst detection.

Geometric triangulation using the measured, exact arrival times of the signal at the individual satellites enabled astronomers to determine that the burst and its afterglow came from a point just inside the northeastern corner (6:13:31.0 - 51:56:40, J2000 and 6:13:31.08 - 51:56:41.7, ICRS 2000.0) of southern Constellation Carina, the «Keel» of the mythological ship of the Argonauts known as the ARGO NAVIS — found northwest of Canopus (Alpha Carinae); west of Tau Puppis; north of Delta Pictoris, and east of Beta Pictoris.

Another small proportion of GRBs exhibit comparatively short - duration bursts that average only 0.3 seconds and very little x-ray and optical afterglow (Gehrels et al, 2002).

While the burst's afterglow showed a steady decline in brightness at both optical and X-ray wavelengths, that was not the case at radio wavelengths.