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The Universe in Gamma Rays

2013-03-14 Science
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Release : 2013-03-14
Genre : Science
Kind : eBook
Book Rating : 931/5 ( reviews)

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Book Synopsis The Universe in Gamma Rays by : Volker Schönfelder

Download or read book The Universe in Gamma Rays written by Volker Schönfelder. This book was released on 2013-03-14. Available in PDF, EPUB and Kindle. Book excerpt: After describing cosmic gamma-ray production and absorption, the instrumentation used in gamma-ray astronomy is explained. The main part of the book deals with astronomical results, including the somewhat surprising result that the gamma-ray sky is continuously changing.

Very High Energy Cosmic Gamma Radiation

2004 Science
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Release : 2004
Genre : Science
Kind : eBook
Book Rating : 732/5 ( reviews)

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Book Synopsis Very High Energy Cosmic Gamma Radiation by : Felix A. Aharonian

Download or read book Very High Energy Cosmic Gamma Radiation written by Felix A. Aharonian. This book was released on 2004. Available in PDF, EPUB and Kindle. Book excerpt: Gamma ray astronomy, the branch of high energy astrophysics that studies the sky in energetic ?-ray photons, is destined to play a crucial role in the exploration of nonthermal phenomena in the Universe in their most extreme and violent forms. The great potential of this discipline offers impressive coverage of many OC hot topicsOCO of modern astrophysics and cosmology, such as the origin of galactic and extragalactic cosmic rays, particle acceleration and radiation processes under extreme astrophysical conditions, and the search for dark matter."

Invisible Universe

2002 Education
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Release : 2002
Genre : Education
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Invisible Universe by : Stephen M. Pompea

Download or read book Invisible Universe written by Stephen M. Pompea. This book was released on 2002. Available in PDF, EPUB and Kindle. Book excerpt: The 5 class sessions, of 45-60 minutes each, deepen student understanding of the electromagnetic spectrum, enabling students to detect and consider wavelengths other than visible light. Activities feature energy stations, including infrared (TV remote); microwave (pager); ultraviolet (black light) and other devices. Students come up with their own tests to see what blocks each wavelength, and what does not. They learn how these other wavelengths can be used to "see" things we cannot see with our eyes.

What Are Gamma-Ray Bursts?

2011-01-10 Science
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Release : 2011-01-10
Genre : Science
Kind : eBook
Book Rating : 006/5 ( reviews)

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Book Synopsis What Are Gamma-Ray Bursts? by : Joshua S. Bloom

Download or read book What Are Gamma-Ray Bursts? written by Joshua S. Bloom. This book was released on 2011-01-10. Available in PDF, EPUB and Kindle. Book excerpt: A brief, cutting-edge introduction to the brightest cosmic phenomena known to science Gamma-ray bursts are the brightest—and, until recently, among the least understood—cosmic events in the universe. Discovered by chance during the cold war, these evanescent high-energy explosions confounded astronomers for decades. But a rapid series of startling breakthroughs beginning in 1997 revealed that the majority of gamma-ray bursts are caused by the explosions of young and massive stars in the vast star-forming cauldrons of distant galaxies. New findings also point to very different origins for some events, serving to complicate but enrich our understanding of the exotic and violent universe. What Are Gamma-Ray Bursts? is a succinct introduction to this fast-growing subject, written by an astrophysicist who is at the forefront of today's research into these incredible cosmic phenomena. Joshua Bloom gives readers a concise and accessible overview of gamma-ray bursts and the theoretical framework that physicists have developed to make sense of complex observations across the electromagnetic spectrum. He traces the history of remarkable discoveries that led to our current understanding of gamma-ray bursts, and reveals the decisive role these phenomena could play in the grand pursuits of twenty-first century astrophysics, from studying gravity waves and unveiling the growth of stars and galaxies after the big bang to surmising the ultimate fate of the universe itself. What Are Gamma-Ray Bursts? is an essential primer to this exciting frontier of scientific inquiry, and a must-read for anyone seeking to keep pace with cutting-edge developments in physics today.

Searching for Dark Matter with Cosmic Gamma Rays

2016-09-06 Science
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Release : 2016-09-06
Genre : Science
Kind : eBook
Book Rating : 705/5 ( reviews)

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Book Synopsis Searching for Dark Matter with Cosmic Gamma Rays by : Andrea Albert

Download or read book Searching for Dark Matter with Cosmic Gamma Rays written by Andrea Albert. This book was released on 2016-09-06. Available in PDF, EPUB and Kindle. Book excerpt: Searching for Dark Matter with Cosmic Gamma Rays summarizes the evidence for dark matter and what we can learn about its particle nature using cosmic gamma rays. It has almost been 100 years since Fritz Zwicky first detected hints that most of the matter in the Universe that doesn't directly emit or reflect light. Since then, the observational evidence for dark matter has continued to grow. Dark matter may be a new kind of particle that is governed by physics beyond our Standard Model of particle physics. In many models, dark matter annihilation or decay produces gamma rays. There are a variety of instruments observing the gamma-ray sky from tens of MeV to hundreds of TeV. Some make deep, focused observations of small regions, while others provide coverage of the entire sky. Each experiment offers complementary sensitivity to dark matter searches in a variety of target sizes, locations, and dark matter mass scales. We review results from recent gamma-ray experiments including anomalies some have attributed to dark matter. We also discuss how our gamma-ray observations complement other dark matter searches and the prospects for future experiments.

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