VERITAS Observation of CTA1
Nahee Park (for the VERITAS Collaboration)
TL;DR
This paper reports the detection of extended TeV gamma-ray emission from the supernova remnant CTA 1 using VERITAS, with the emission centered near the Fermi-detected pulsar, providing insights into high-energy processes in the remnant.
Contribution
First VERITAS observation of CTA 1 revealing extended TeV emission and its association with the pulsar, enhancing understanding of particle acceleration in supernova remnants.
Findings
Extended TeV emission detected near the Fermi pulsar
Emission flux approximately 4% of Crab Nebula flux
Centroid of TeV emission located near the pulsar
Abstract
CTA 1 (G119.5+10.2) is a composite supernova remnant (SNR) with a shell-type structure, visible in the radio band, surrounding a smaller pulsar wind nebula. Fermi detected a radio-quiet pulsar PSR J0007+7303 within the radio shell. 26.5 hours of VERITAS observation revealed extended TeV emission from CTA 1. The centroid of the TeV emission is located near the Fermi pulsar. The integral flux of the emission was ~4% of the Crab Nebula flux (>1TeV). We present an update on the source analysis with additional exposure and possible interpretations.
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