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When photons talk to each other

When photons talk to each other

by Tanmoy Laskar | May 21, 2011 | Daily Paper Summaries

Photons do not normally talk to each other – but put GeV gamma-rays into a high enough background radiation field, and eventually one will break the ice.

Plerions: the hole of the donut

Plerions: the hole of the donut

by Tanmoy Laskar | May 16, 2011 | Daily Paper Summaries

In the second astrobite in our Supernova Remnants Series, we check out a review article that describes the embedded gems of supernova remnants – pulsar wind nebulae.

New Glossary: Astronomy & the Electromagnetic Spectrum

New Glossary: Astronomy & the Electromagnetic Spectrum

by Tanmoy Laskar | May 8, 2011 | Quick Notes

Astronomers seldom touch, smell, hear, or taste astronomical sources – their primary sensory input is light. Read about how astronomers use the electromagnetic spectrum to unravel the mysteries of the Universe!

SNoR-ED: Supernova Remnants I – Ejecta-Dominated

SNoR-ED: Supernova Remnants I – Ejecta-Dominated

by Tanmoy Laskar | Mar 17, 2011 | Daily Paper Summaries

In this, the first in a series of astrobites on Supernova Remnants during various stages of evolution, we wonder at ejecta-dominated SNRs: what are they, how do they shine, and what can we learn by studying them?

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