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Study of the Very High Energy emission of M87 through its broadband spectral energy distribution

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arxiv 2112.09179 v1 pith:LM45KMIT submitted 2021-12-16 astro-ph.HE

Study of the Very High Energy emission of M87 through its broadband spectral energy distribution

classification astro-ph.HE
keywords emissionenergybeenhighradiocherenkovdistributionexplain
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The radio galaxy M87 is the central dominant galaxy of the Virgo Cluster. Very High Energy (VHE,$\gtrsim 0.1$ TeV) emission, from M87 has been detected by Imaging Air Cherenkov Telescopes (IACTs ). Recently, marginal evidence for VHE long-term emission has also been observed by the High Altitude Water Cherenkov (HAWC) Observatory, a gamma ray and cosmic-ray detector array located in Puebla, Mexico. The mechanism that produces VHE emission in M87 remains unclear. This emission is originated in its prominent jet, which has been spatially resolved from radio to X-rays. In this paper, we constructed a spectral energy distribution from radio to gamma rays that is representative of the non-flaring activity of the source, and in order to explain the observed emission, we fit it with a lepto-hadronic emission model. We found that this model is able to explain non-flaring VHE emission of M87 as well as an orphan flare reported in 2005.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Fermi-Large Area Telescope Detection of Very High Energy (>100 GeV) Emission from Compton-Dominated Blazars

    astro-ph.HE 2026-07 accept novelty 6.0

    Systematic Fermi-LAT search detects VHE emission from 14 Compton-dominated blazars (4 new at >5σ) and constrains the emitting region to >1.1–1.4 BLR radii.

  2. Constraints on axion-like particles from ultra-high-energy observations of M87 with the HAWC observatory

    astro-ph.HE 2026-06 unverdicted novelty 4.0

    No photon-ALP conversion signal found in HAWC data from M87, producing competitive constraints excluding ALP masses of 10^{-8} to 10^{-6} eV for couplings above 5×10^{-12} GeV^{-1}.