The TeV Morphology of the Interacting Supernova Remnant IC 443
Brian Humensky (for the VERITAS Collaboration)
TL;DR
This paper studies the detailed gamma-ray emission morphology of the supernova remnant IC 443 at TeV energies, revealing spatial structures and potential emission sources related to shock-cloud interactions.
Contribution
It provides high-resolution TeV gamma-ray imaging of IC 443, advancing understanding of its emission regions and interaction with surrounding molecular gas.
Findings
Resolved TeV emission on few-arcmin scales
Identified possible emission sources including the shell and nearby gaseous structures
Discussed the origin of gamma-ray emission in the context of shock-cloud interactions
Abstract
The middle-aged supernova remnant IC 443 is interacting with molecular gas in its surroundings. -LAT has established that its gamma-ray emission at low energies shows the "pion bump" that is characteristic of hadronic emission. TeV emission was previously established by MAGIC and VERITAS at a site of interaction between the shock front and a molecular cloud. VERITAS has continued to observe IC 443 and can now resolve the emission on few-arcmin scales. We will present results on the emission morphology and discuss possible sources of the emission, including the shell of the remnant and other gaseous structures in the vicinity.
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