Fermi-LAT Detection of the Young SuperNova Remnant Tycho

Abstract

After almost three years of data taking in sky survey mode, the \emph{Fermi}-LAT has detected $\gamma$-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 $\gamma$-ray integral flux from 400 MeV up to 100 GeV has been measured to be (3.5$\pm 1.1_{stat}\pm 0.7_{syst}$)$\times 10^{-9}$ cm${}^{-2}$s${}^{-1}$ with a photon index of 2.3$\pm 0.2_{stat}\pm 0.1_{syst}$.

References in corpus (5)

• Observational constraints on energetic particle diffusion in young SNRs: amplified magnetic field and maximum energy
• Tycho Brahe's 1572 supernova as a standard type Ia explosion revealed from its light echo spectrum
• The Fermi-LAT high-latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background
• Scattered-Light Echoes from the Historical Galactic Supernovae Cassiopeia A and Tycho (SN 1572)
• Resolved shock structure of the Balmer-dominated filaments in Tycho's supernova remnant: Cosmic-ray precursor?

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