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Exploring a SNR/Molecular Cloud Association Within HESS J1745-303

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abstract

HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart has previously been found in longer-wavelength data, the processes that power the VHE emission are not well understood. Combining the latest VHE data with recent XMM-Newton observations and a variety of source catalogs and lower-energy survey data, we attempt to match (from an energetic and positional standpoint) the various parts of the emission of HESS J1745-303 with possible candidates. Though no single counterpart is found to fully explain the VHE emission, we postulate that at least a fraction of the VHE source may be explained by a supernova-remnant/molecular-cloud association and/or a high-spin-down-flux pulsar.

fields

astro-ph.HE 1

years

2026 1

verdicts

UNVERDICTED 1

representative citing papers

A catalogue of TeV pulsar environments

astro-ph.HE · 2026-06-16 · unverdicted · novelty 7.0

A homogenized catalogue of 128 TeV sources associated with 66 pulsars, covering all evolutionary stages and showing only weak correlation between luminosity and pulsar age.

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  • A catalogue of TeV pulsar environments astro-ph.HE · 2026-06-16 · unverdicted · none · ref 67 · internal anchor

    A homogenized catalogue of 128 TeV sources associated with 66 pulsars, covering all evolutionary stages and showing only weak correlation between luminosity and pulsar age.