Search results for Fermi wavelength

Astronomy Aug 14, 2023

Searching for the universe's missing teenage pictures

Astrophysicists can use measurements of the cosmic microwave background, radiation formed 380,000 years after the Big Bang, to understand what the universe was like in its infancy. And by observing light emitted from galaxies ...

Astronomy Jul 27, 2023

A gamma ray burst lasted so long it triggered a satellite twice

Gamma ray bursts (GRBs) are the most powerful astrophysical phenomena in the universe. For a span of seconds to a few minutes, they can be the most powerful high-energy event in the sky, shining across billions of light years.

Astronomy Jul 18, 2023

Researchers operating Gamma-ray Burst Monitor discover brightest gamma-ray burst ever detected

The University of Alabama in Huntsville (UAH) has announced that three researchers associated with the UAH Center for Space Plasma and Aeronomic Research (CSPAR) have discovered a gamma-ray burst (GRB) approximately 2.4 billion ...

Astronomy Jun 29, 2023

First 'ghost particle' image of Milky Way galaxy captured by scientists: Neutrinos detected by IceCube

Our Milky Way galaxy is an awe-inspiring feature of the night sky, viewable with the naked eye as a horizon-to-horizon hazy band of stars. Now, for the first time, the IceCube Neutrino Observatory has produced an image of ...

Astronomy Jun 6, 2023

NASA's new detectors could improve views of gamma-ray events

Using technology similar to that found in smartphone cameras, NASA scientists are developing upgraded sensors to reveal more details about black hole outbursts and exploding stars—all while being less power hungry and easier ...

Astronomy Jun 6, 2023

Not your average space explosion: Very long baseline array finds classical novae are anything but simple

While studying classical novae using the National Radio Astronomy Observatory's Very Long Baseline Array (VLBA), a graduate researcher uncovered evidence showing that the objects may have been erroneously typecast as simple. ...

Astronomy Jun 2, 2023

NASA looks back at 50 years of gamma-ray burst science

Fifty years ago, on June 1, 1973, astronomers around the world were introduced to a powerful and perplexing new phenomenon called GRBs (gamma-ray bursts). Today sensors on orbiting satellites like NASA's Swift and Fermi missions ...

Astronomy May 11, 2023

Testing a theory of supermassive black holes with 100 newly described 'blazars'

More than a hundred blazars—distant and active galaxies with a central supermassive black hole that drives powerful jets—have been newly characterized by Penn State researchers from a catalog of previously unclassified ...

Optics & Photonics Apr 4, 2023

Hot electron electrochemistry with ultrafast laser pulses

Laser-induced electrochemical deposition of metals on metals relies possibly on thermal and defect generation effects. When semiconductor substrates are chosen, locally photogenerated electrons can reduce metal ions resulting ...

Astronomy Mar 30, 2023

The first JWST spectrum of the GRB 221009A afterglow

Gamma-ray bursts are the most energetic and luminous events known to occur in the Universe. Short-lived flashes of gamma rays that typically last from a a tenth of a second to less than an hour, gamma-ray bursts may for a ...

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