A low density of the Extragalactic Background Light revealed by the H.E.S.S. spectra of the BLLac objects 1ES 1101-232 and H 2356-309
| dc.creator | Costamante, L. | |
| dc.date | 2006-12-23 | |
| dc.date.accessioned | 2026-07-07T10:36:44Z | |
| dc.date.available | 2026-07-07T10:36:44Z | |
| dc.description | The unexpectedly hard spectra measured by HESS for the BLLacs 1ES 1101-232 and H 2356-309 has allowed an upper limit on the Extragalactic Background Light (EBL) to be derived in the optical/near-infrared range, which is very close to the lower limit given by the resolved galaxy counts. This result seems to exclude a large contribution to the EBL from other sources (e.g. Population III stars) and indicates that the intergalactic space is more transparent to gamma-rays than previously thought. A brief discussion of EBL absorption effects on blazar spectra and further observational tests to check this conclusion are presented, including the selection of new candidates for observations with Cherenkov telescopes. | |
| dc.description | 6 pages, 9 figures, 1 table. Proceedings of the conference "The Multi-Messenger Approach to High-Energy Gamma-ray Sources", Barcelona, July 4-7 2006 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0612709 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0612709 | |
| dc.identifier | Astrophys.SpaceSci.309:487-495,2007 | |
| dc.identifier | doi:10.1007/s10509-007-9418-7 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/180155 | |
| dc.subject | Astrophysics | |
| dc.title | A low density of the Extragalactic Background Light revealed by the H.E.S.S. spectra of the BLLac objects 1ES 1101-232 and H 2356-309 | |
| dc.type | text |