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Gamma Ray

Gamma Ray

Seminar: Observational Techniques in X- and Gamma-Ray ...

"Seminar: Observational Techniques in X- and Gamma-Ray Astronomy. Dr. Niels Lund. Emeritus scientist. DTU Space Technical University of Denmark".High-energy astronomy, specifically X- and gamma-ray astronomy are young sciences, they are children of the space age - born only 50 years ago. We need to go to space to get a good view of the high-energy sky. Contrary to optical astronomy which cover only a narrow span of wavelengths the high energy astronomy spans many decades of energy. It is therefore no surprise that the observational challenges vary strongly between observations of low energy X-rays and of high energy gamma-rays. The differences are clearly illustrated when we compare the million known sources of keV X-rays, with the scant thirty sources known to emit at 1 MeV. At still higher energies life gets a bit easier, and the number of known sources raises again. The reasons for this huge discrepancy will be discussed as well as the efforts to penetrate into the difficult energy band around 1 MeV.

Videos

Gamma Ray 'Hellbent' Official Lyric Video from the new album 'Empire Of The Undead'

Pre-order the album now: CD+DVD: http://smarturl.it/GR_EOTU_SPEC | CD: http://smarturl.it/GR_EUTU_CD | 2Vinyl: http://smarturl.it/GR_EUTU_LP 'Empire Of The U...

Gamma Ray 'Empire Of The Undead' Song 1 'Avalon'

Order the album now: CD+DVD: http://smarturl.it/GR_EOTU_SPEC | CD: http://smarturl.it/GR_EUTU_CD | 2Vinyl: http://smarturl.it/GR_EUTU_LP | iTunes: http://sma...

Gamma Ray - Man On A Mission

from 1995 masterpiece Land Of The Free.

Gamma Ray - Future World (Feat. Michael Kiske)

Gamma Ray Heading for the East Full Concert

00:00 Lust For Life 07:42 Heaven Can Wait 12:06 Space Eater 17:36 Freetime 24:29 Who Do You Think You Are 30:18 The Silence 37:24 Save Us 45:12 I Want Out 49...

Gamma Ray 'Empire Of The Undead' Song 10 'I Will Return'

Order the album now: CD+DVD: http://smarturl.it/GR_EOTU_SPEC | CD: http://smarturl.it/GR_EUTU_CD | 2Vinyl: http://smarturl.it/GR_EUTU_LP | iTunes: http://sma...

Birth Control - Gamma Ray

Birth Control - Gamma Ray - Video @ Pearl Harbour.

Gamma Ray "Master Of Confusion" Official Rehearsal Lyric Video (HD)

Order here (Germany): Amazon: http://amzn.to/TJLCLl UK: iTunes https://itunes.apple.com/gb/album/master-of-confusion/id606860170 Amazon MP3 http://www.amazon...

GAMMA RAY "To The Metal!" (Official Video HD)

The first single from Gamma Ray's studio album of the same title. This video, together with videos for "Rise" and "Empathy" can be found on the CD+DVD limite...