Revisiting the analysis of axion-like particles with the Fermi-LAT gamma-ray observation of NGC1275

Abstract

In this work, we re-analyze the Fermi-LAT observation of NGC 1275 to search for axion-like particle (ALP) effects and constrain ALP parameters. Instead of fitting the observed spectrum with ALP models, we adopt an alternative method for the analysis of this source which calculates the irregularity of the spectrum. With the newly used method, we find no spectral oscillation for the NGC 1275 and rule out couplings $g_{a\gamma }>3\times 10^{-12}\mathrm{Ge}{\mathrm{V}}^{-1}$ around ALP mass of $m_a\sim$ 1 neV at 95\% confidence level, which is more stringent than the previous results. We also show that the constraints can be further improved by combining the observation of PKS 2155-304. We suggest that with more sources taken into account, we could obtain a much wider exclusion region.

Conclusion not included in the accepted version have been added in the last paragraph of Section 5

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• Constraints on Axion-like Particles from the Observation of GRB 221009A by LHAASO
• Probing photon-ALP oscillations from the flat spectrum radio quasar 4C+21.35
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• Axion-Like Particle Searches with IACTs
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• GRB 221009A: Spectral signatures based on ALPs candidates
• Magnetohydrodynamics predicts heavy-tailed distributions of axion-photon conversion
• Digging into Axion Physics with (Baby)IAXO
• Constraints on Axion-like Particles from the gamma-ray observation of the Galactic Center
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• X-ray polarimetric features of Gamma-ray Bursts across varied redshifts and hints for Axion-Like-Particles
• An attempt to study axion-photon coupling using compact binary systems with high Shapiro time delay
• Investigating the light curve variation of magnetic white dwarfs induced by the axion-photon conversion