Scientists discover the highest-energy light coming from the sun
Sometimes, the best place to hide a secret is in broad daylight. Just ask the sun.
Astronomy
Aug 3, 2023
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News tagged with cosmic gamma rays
NASA's Fermi mission sees no gamma rays from nearby supernova
A nearby supernova in 2023 offered astrophysicists an excellent opportunity to test ideas about how these types of explosions boost particles, called cosmic rays, to near light-speed. But surprisingly, NASA's Fermi Gamma-ray ...
Astronomy
Apr 16, 2024
0
860
Red Crucifix sighting in 774 may have been supernova
(Phys.org) -- A supernova may have actually been the mysterious "Red Crucifix" in the sky that is cited in the Anglo Saxon Chronicle for the year 774. New correspondence between a university student and Nature carries interesting ...
More than century-old riddle resolved—a blazar is a source of high-energy neutrinos
An international team of scientists has found the first evidence of a source of high-energy cosmic neutrinos, ghostly subatomic particles that can travel unhindered for billions of light years from the most extreme environments ...
General Physics
Jul 12, 2018
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1604
NASA's Fermi telescope confirms star wreck as source of extreme cosmic particles
Astronomers have long sought the launch sites for some of the highest-energy protons in our galaxy. Now a study using 12 years of data from NASA's Fermi Gamma-ray Space Telescope confirms that one supernova remnant is just ...
Astronomy
Aug 10, 2022
1
574
Fermi finds possible dark matter ties in Andromeda galaxy
NASA's Fermi Gamma-ray Space Telescope has found a signal at the center of the neighboring Andromeda galaxy that could indicate the presence of the mysterious stuff known as dark matter. The gamma-ray signal is similar to ...
Astronomy
Feb 21, 2017
35
1526
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 29, 2023
0
290
Researcher points to Sun as likely source of eighth-century 'Charlemagne event'
(Phys.org)—Until recently, the years 774 and 775 were best known for Charlemagne's victory over the Lombards. But earlier this year, a team of scientists in Japan discovered a baffling spike in carbon-14 deposits within ...
Astronomy
Nov 30, 2012
8
2
Data from the Fermi Large Area Telescope suggests there is a particle accelerator in the galactic center
A team of researchers at the Chinese Academy of Sciences has found evidence of a powerful particle accelerator in the galactic center. In their paper published in the journal Nature Communications, the group describes their ...
A source accelerating Galactic cosmic rays to unprecedented energy discovered at the centre of the Milky Way
For more than 10 years the H.E.S.S. observatory in Namibia, run by an international collaboration of 42 institutions in 12 countries, has been mapping the center of our galaxy in very-high-energy gamma rays. These gamma rays ...
Astronomy
Mar 16, 2016
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