CO J=2-1 Observations toward the Supernova Remnant G54.1+0.3

Abstract

We present 12CO J = 2-1 line observations of G54.1+0.3, a composite supernova remnant with a mid-infrared (MIR) loop surrounding the central pulsar wind nebula (PWN). We mapped an area of 12' x 9' around the PWN and its associated MIR loop. We confirm two velocity components that had been proposed to be possibly interacting with the PWN/MIR-loop; the +53 km/s cloud that appears in contact with the eastern boundary of the PWN and the +23 km/s cloud that has CO emission coincident with the MIR loop. We have not found a direct evidence for the interaction in either of these clouds. Instead, we detected an 5'-long arc-like cloud at +15-+23 km/s with a systematic velocity gradient of ~3 km/s/arcmin and broad-line emitting CO gas having widths (FWHM) of <7 km/s in the western interior of the supernova remnant. We discuss their association with the supernova remnant.

9 pages, 13 figures, accepted for publication in the Journal of the Korean Astronomical Society (JKAS)

References in corpus (5)

• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• Distance Determination to the Crab-like PWN G54.1+0.3 and Search for its Supernova Remnant Shell
• Massive-Star Forming Infrared Loop around the Crab-like Supernova Remnant G54.1+0.3: Post Main-Sequence Triggered Star Formation?
• Diffusive shock acceleration with magnetic field amplification and Alfvenic drift
• Near-Infrared Spectroscopy of Infrared-Excess Stellar Objects in the Young Supernova Remnant G54.1+0.3

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• Near-Infrared Spectroscopy of Infrared-Excess Stellar Objects in the Young Supernova Remnant G54.1+0.3
• Detailed Analysis of the TeV γ-Ray Sources 3HWC J1928+178, 3HWC J1930+188, and the New Source HAWC J1932+192
• Distances of Galactic Radio Pulsars; First Quadrant: $-2^{\circ }<\ell <90^{\circ }$ and $-2^{\circ }<b<2^{\circ }$
• Far-infrared Polarization of the Supernova Remnant Cassiopeia A with SOFIA HAWC+