{"product_id":"cosmic-explosions-edo-berger-9781581122336","title":"Cosmic Explosions: The Beasts and Their Lair","description":"The diversity of stellar death is revealed in the energy, velocity and geometry of the explosion debris (\"ejecta''). Using multi-wavelength observations of gamma-ray burst (GRB) afterglows I show that GRBs, arising from the death of massive stars, are marked by relativistic, collimated ejecta (\"jets'') with a wide range of opening angles. These results suggest that various cosmic explosions are powered by a common energy source, an \"engine'' (possibly an accreting stellar-mass black hole), with their diverse appearances determined solely by the variable high velocity output. On the other hand, using radio observations I show that local type Ibc core-collapse supernovae generally lack relativistic ejecta and are therefore not powered by engines. Instead, the highest velocity debris in these sources, typically with a velocity lower than 100,000 km\/sec, are produced in the (effectively) spherical ejection of the stellar envelope. The relative rates of engine- and collapse-powered explosions suggest that the former account for only a small fraction of the stellar death rate. Using the first radio and submillimeter observations of GRB hosts, I show that some are extreme starburst galaxies with the bursts directly associated with the regions of most intense star formation. I suggest, by comparison to other well-studied samples, that GRBs preferentially occur in sub-luminous, low mass galaxies, undergoing the early stages of a starburst process. If confirmed with future observations, this trend will place GRBs in the forefront of star formation and galaxy evolution studies.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e EDO Berger\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1581122330\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781581122336\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Dissertation.com\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 07\/01\/2004\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 200\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.81lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.42d","brand":"EDO Berger","offers":[{"title":"Paperback","offer_id":47305333375231,"sku":"9781581122336","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_87c57484-c4d5-4571-9ec2-3a6e59f5fa09.jpg?v=1758830599","url":"https:\/\/www.whiterainbookhouse.com\/products\/cosmic-explosions-edo-berger-9781581122336","provider":"WR Book House","version":"1.0","type":"link"}