Artikelnummer | 9783838110639 |
---|---|
Produkttyp | Buch |
Preis | 91,00 CHF |
Verfügbarkeit | Lieferbar |
Einband | Kartonierter Einband (Kt) |
Meldetext | Folgt in ca. 10 Arbeitstagen |
Autor | Berger, Karsten |
Verlag | Südwestdeutscher Verlag für Hochschulschriften AG Co. KG |
Weight | 0,0 |
Erscheinungsjahr | 20150927 |
Seitenangabe | 140 |
Sprache | ger |
Anzahl der Bewertungen | 0 |
Discovery of the first LBL/IBL Objects at Very High Energy Gamma-Rays Buchkatalog
20 years after the discovery of the Crab Nebula as a source of very high energy (VHE) gamma-rays, the number of sources discovered >100 GeV using Cherenkov telescopes has quickly grown to almost 100. This book focuses on the search for emission from a particular type of blazars previously undetected at VHE gamma-rays: low-peaked (LBL) and intermediate-peaked (IBL) BL Lacertae objects. These sources emit non-thermal radiation, and exhibit a peak in their radio-to-X-ray spectral energy distribution at UV/IR energies. They dominate source counts from space-borne observations at gamma-ray energies <10 GeV, with spectra that show power-law extensions to higher energies, though theoretical models suggest a turn over at energies <100 GeV. The search was narrowed to the prominent sources BL Lac, W-Comae and S5-0716. Their detections are in line with theoretical expectations, but strain models based on electron shock acceleration and Inverse- Compton cooling. Short variability time scales around one day observed at VHE show that the gamma- rays originate close to the putative supermassive black holes in the centers of blazars, corresponding to <1000 Schwarzschild radii.
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