Evidence for γ-ray emission from the remnant of Kepler’s supernova based on deep H.E.S.S. observations
- Aharonian, F.
- Benkhali, F. Ait
- Anguner, E. O.
- Ashkar, H.
- Backes, M.
- Martins, V. Barbosa
- Batzofin, R.
- Becherini, Yvonne
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- Bernloehr, K.
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- de Lavergne, M. de Bony
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- Cangemi, F.
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- Wilhelmi, E. de Ona
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DOIAbstract
Observations with imaging atmospheric Cherenkov telescopes (IACTs) have enhanced our knowledge of nearby supernova (SN) remnants with ages younger than 500 yr by establishing Cassiopeia A and the remnant of Tycho's SN as very-high-energy (VHE) gamma-ray sources. The remnant of Kepler's SN, which is the product of the most recent naked-eye SN in our Galaxy, is comparable in age to the other two, but is significantly more distant. If the gamma-ray luminosities of the remnants of Tycho's and Kepler's SNe are similar, then the latter is expected to be one of the faintest gamma-ray sources within reach of the current generation TACT arrays. Here we report evidence at a statistical level of 4.6 sigma for a VHE signal from the remnant of Kepler's ...
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