Multi-wavelength Observations of PG 1553+113 with HESS
| dc.creator | HESS Collaboration | |
| dc.creator | Benbow, W. | |
| dc.creator | Boisson, C. | |
| dc.creator | Buehler, R. | |
| dc.creator | Sol, H. | |
| dc.date | 2007-09-28 | |
| dc.date.accessioned | 2026-07-07T08:32:54Z | |
| dc.date.available | 2026-07-07T08:32:54Z | |
| dc.description | Very high energy (VHE; >100 GeV) gamma-ray observations of PG 1553+113 were made with the High Energy Stereoscopic System (HESS) in 2005 and 2006. A strong signal, ~10 standard deviations, is detected by HESS during the 2 years of observations (24.8 hours live time). The time-averaged energy spectrum, measured between 225 GeV to ~1.3 TeV, is characterized by a very steep power law (photon index of Gamma = (4.5 +- 0.3 {stat} +- 0.1 {syst}). The integral flux above 300 GeV is ~3.4% of the Crab Nebula flux and shows no evidence for any variations, on any time scale. H+K (1.45-2.45 micron) spectroscopy of PG 1553+113 was performed in March 2006 with SINFONI, an integral field spectrometer of the ESO Very Large Telescope (VLT) in Chile. The redshift of PG 1553+113 is still unknown, as no absorption or emission lines were found. | |
| dc.description | 4 pages, 5 figures; To appear in the Proceedings of the 30th ICRC (Merida, Mexico) | |
| dc.identifier | https://arxiv.org/abs/0709.4602 | |
| dc.identifier | http://arxiv.org/abs/0709.4602 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/138943 | |
| dc.subject | Astrophysics | |
| dc.title | Multi-wavelength Observations of PG 1553+113 with HESS | |
| dc.type | text |