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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2018

Search for γ-ray emission from superluminous supernovae with the Fermi-LAT

Résumé

We present the first individual and stacking systematic search for γ-ray emission in the GeV band in the directions of 45 superluminous supernovae (SLSNe) with the Fermi Large Area Telescope (LAT). No excess of γ-rays from the SLSN positions was found. We report γ-ray luminosity upper limits and discuss the implication of these results on the origin of SLSNe and, in particular, the scenario of central compact object-aided SNe. From the stacking search, we derived an upper limit at 95% confidence level to the γ-ray luminosity (above 600 MeV) Lγ < 9.1 × 1041 erg s−1 for an assumed E−2 photon spectrum for our full SLSN sample. We conclude that the rate of the neutron stars born with millisecond rotation periods P ≲ 2 ms and B ~ 1012−13 G must be lower than the rate of the observed SLSNe. The luminosity limits obtained on individual sources are also constraining: in particular, SN2013fc, CSS140222, SN2010kd, and PTF12dam can only be born with millisecond periods if B ≲ 1013 G.Key words: gamma rays: general / supernovae: general
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Dates et versions

hal-01758658 , version 1 (04-06-2024)

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N. Renault-Tinacci, K. Kotera, A. Neronov, S. Ando. Search for γ-ray emission from superluminous supernovae with the Fermi-LAT. Astronomy and Astrophysics - A&A, 2018, 611, pp.A45. ⟨10.1051/0004-6361/201730741⟩. ⟨hal-01758658⟩
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