Astronomical Events: Eclipse, Impact Event, Gamma-Ray Burst, Lunar Eclipse, Soft Gamma Repeater, Meteor Shower, Winter Solstice Books LLC

ISBN: 9781156822104

Published: August 12th 2011

Paperback

70 pages


Description

Astronomical Events: Eclipse, Impact Event, Gamma-Ray Burst, Lunar Eclipse, Soft Gamma Repeater, Meteor Shower, Winter Solstice  by  Books LLC

Astronomical Events: Eclipse, Impact Event, Gamma-Ray Burst, Lunar Eclipse, Soft Gamma Repeater, Meteor Shower, Winter Solstice by Books LLC
August 12th 2011 | Paperback | PDF, EPUB, FB2, DjVu, audiobook, mp3, ZIP | 70 pages | ISBN: 9781156822104 | 5.38 Mb

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 69. Chapters: Eclipse, Impact event, Gamma-ray burst, Lunar eclipse, Soft gamma repeater, Meteor shower, Winter solstice, Theoretical astronomy, Occultation, Astronomical visual source, Gamma-ray burst progenitors, X-ray transient, Gamma-ray burst emission mechanisms, Astronomical source, Triple conjunction, Historically significant lunar eclipses, RS Ophiuchi, OSO 5, Astronomical transit, Supermoon, Solar storm of 1859, List of meteor showers, Meteor procession of February 9, 1913, Light echo, Aurora of November 17, 1882, Great Comet, Opposition surge, Hypernova, Great Meteor of August 18, 1783, SCP 06F6, Great conjunction, GRB 080916C, Burckle Crater, GRB 970402, Supernova impostor, Radio source SHGb02+14a, Bastille Day event, Grazing lunar occultation, Grazing occultation, Guest star, Transit of Uranus from Neptune, Transient astronomical event, Celestial event.

Excerpt: Gamma-ray bursts (GRBs) are flashes of gamma rays associated with extremely energetic explosions that have been observed in distant galaxies. They are the most luminous electromagnetic events known to occur in the universe. Bursts can last from ten milliseconds to several minutes, although a typical burst lasts 20-40 seconds.

The initial burst is usually followed by a longer-lived afterglow emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, micro and radio). Most observed GRBs are believed to consist of a narrow beam of intense radiation released during a supernova event, as a rapidly rotating, high-mass star collapses to form a neutron star, quark star, or black hole. A subclass of GRBs (the short bursts) appear to originate from a different process, possibly the merger of binary neutron stars. The sources of most GRBs are billions of light years away from Earth, implying that the explosions are both extremely energetic (a typical burst...



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