Tag Archives: gamma rays

The search for a powerful natural particle accelerator

Posted on August 29, 2022 by

And the promise of one distant supernova remnant. Continue reading →

Posted in Scicomm | Tagged cosmic ray knee, cosmic rays, Fermi Gamma-ray Space Telescope, gamma rays, inverse Compton scattering, neutral pions, OMG particle, PeVatron, shockfront mechanism, supernova remnants, Swordy plot | Comments Off

HESS telescopes discover new source of gamma rays called a superbubble

Posted on January 23, 2015 by

Astronomers using the HESS telescopes have discovered a new source of high-energy gamma rays. Dubbed a superbubble, it appears to be a massive shell of gas and dust 270 light-years in diameter being blown outward by the radiation from multiple … Continue reading →

Posted in Uncategorized | Tagged 30 Dor C, Cherenkov radiation, Cherenkov Telescope Array, Crab Nebula, dark matter, Fermi telescope, gamma rays, High Energy Stereoscopic System, Large Magellanic Cloud, pulsar wind nebulae, superbubbles, supernova remnants, Tarantula Nebula | Comments Off

Type 1a supernova spotted in M82

Posted on January 22, 2014 by

(A version of this piece appeared on The Hindu, Chennai, website on January 22 as written by me.) A Type 1a supernova was spotted a few hours ago by stargazers in the starburst galaxy M82, which is only 11.4 million light-years … Continue reading →

Posted in Uncategorized | Tagged amateur astronomy, gamma rays, Koichi Itagaki, M82, neutrinos, supernovae, Type 1a supernova, Type 2 supernova | Comments Off

Ambitious gamma-ray telescope takes shape

Posted on July 4, 2013 by

I wrote a shortened version of this piece for The Hindu on July 4, 2013. This is the longer version, with some more details thrown in. — Scientists and engineers from 27 countries including India are pitching for a next-generation … Continue reading →

Posted in Uncategorized | Tagged astrophysics, Cherenkov Telescope Array, gamma rays, Max Planck Institute, Saha Institute of Nuclear Physics | Comments Off