No significant GeV emission from 223 SLSNe constrains GeV-to-optical efficiency to η < 1.3×10^{-3}, with <0.7% of events allowed above 10^{-2}; SN 2017egm shows a ~4σ excess favoring magnetar origin while SN 2018bsz does not.
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astro-ph.HE 5representative citing papers
Joint prompt and inverse-Compton modeling of MSP-injected e± yields strong upper limits on η_e/η_γ from recent Fermi-LAT GCE spectra that exceed MAGIC globular-cluster bounds.
HAWC observations yield no TeV detections from spider MSPs, with upper limits indicating they are unlikely to contribute substantially to Galactic diffuse emission at TeV energies.
Analysis of an unidentified Fermi gamma-ray source shows inconclusive results with a mild spectral preference for dark matter annihilation over a pulsar origin.
The 4FGL-DR4 catalog updates the prior release with 14 years of Fermi-LAT observations, adding 546 new point sources and revising parameters, associations, and light curves for a total of 7194 gamma-ray sources.
citing papers explorer
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On the Gamma-ray Efficiency of Superluminous Supernovae: Potential Detections and Population-Level Constraints
No significant GeV emission from 223 SLSNe constrains GeV-to-optical efficiency to η < 1.3×10^{-3}, with <0.7% of events allowed above 10^{-2}; SN 2017egm shows a ~4σ excess favoring magnetar origin while SN 2018bsz does not.
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Strong Constraints on Millisecond Pulsar Injection Spectra from Fermi-LAT Observations of the Galactic Center
Joint prompt and inverse-Compton modeling of MSP-injected e± yields strong upper limits on η_e/η_γ from recent Fermi-LAT GCE spectra that exceed MAGIC globular-cluster bounds.
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Search for TeV emission from spider millisecond pulsars with HAWC
HAWC observations yield no TeV detections from spider MSPs, with upper limits indicating they are unlikely to contribute substantially to Galactic diffuse emission at TeV energies.
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Deeper analysis of Fermi-LAT unassociated 4FGL J2112.5-3043 for possible identification
Analysis of an unidentified Fermi gamma-ray source shows inconclusive results with a mild spectral preference for dark matter annihilation over a pulsar origin.