Fermi Large Area Telescope Detection Of The Young Supernova Remnant Tycho
Journal Article
·
· The Astrophysical Journal. Letters
- Univ. del Politecnico di Bari (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Bari (Italy)
- Univ. Paris-Saclay, Gif-sur-Yvette (France)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Istituto Nazionale di Fisica Nucleare (INFN), Bari (Italy)
- Univ. of Wurzburg (Germany)
After almost three years of data taking in sky survey mode, the Fermi -LAT has detected γ-ray emission toward the Tycho’s Supernova Remnant (SNR). The Tycho SNR is among the youngest remnants in the Galaxy, originating from a Type Ia Supernova in AD 1572. The γ-ray integral flux from 400 MeV up to 100 GeV has been measured to be (3.5±1.1stat±0.7syst)×10-9 cm-2s-1 with a photon index of 2.3±0.2stat±0.1syst. A simple model consistent with TeV, X-ray and radio data is sufficient to explain the observed emission as originating from π0-decays as a result of cosmicray acceleration and interaction with the ambient medium.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1356770
- Alternate ID(s):
- OSTI ID: 22047260
- Journal Information:
- The Astrophysical Journal. Letters, Journal Name: The Astrophysical Journal. Letters Journal Issue: 1 Vol. 744; ISSN 2041-8205
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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