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We report on CO and HI studies of the mixed-morphology supernova remnant (SNR) G346.6$-$0.2. We find a wind-blown bubble along the radio continuum shell with an expansion velocity of $\sim10$ km s$^{-1}$, which was likely formed by strong…

高能天体物理现象 · 物理学 2021-12-15 H. Sano , H. Suzuki , K. K. Nobukawa , M. D. Filipović , Y. Fukui , T. J. Moriya

We report a discovery of shocked gas from the supernova remnant (SNR) G357.7+0.3. Our millimeter and submillimeter observations reveal broad molecular lines of CO(2-1), CO(3-2), CO(4-3), 13CO (2-1) and 13CO (3-2), HCO^+ and HCN using HHSMT,…

星系天体物理 · 物理学 2016-12-28 J. Rho , J. Bieging , J. Hewitt , M. Andersen , W. T. Reach , R. Guesten

We performed millimeter observations in CO lines toward the supernova remnant (SNR) G127.1+0.5. We found a molecular filament at 4--13 km s$^{-1}$ consisting of two distinct parts: a straight part coming out of the remnant region and a…

高能天体物理现象 · 物理学 2015-06-22 Xin Zhou , Ji Yang , Min Fang , Yang Su

Most old supernova remnants (SNRs) in the Milky Way have not yet been identified. Considering their large potential number and the sufficient momentum-energy transfer to the interstellar medium (ISM), they are a key part of our…

星系天体物理 · 物理学 2024-03-07 Xin Zhou , Yang Su , Ji Yang , Yang Chen , Zhibo Jiang

We present a study of a new molecular shell, G126.1-0.8-14, using available multiwavelegth Galactic plane surveys and optical Gemini observations. A well defined shell-like structure is observed in the CO(1--0) line emission at (l,b) =…

We present ASCA observations of supernova remnant (SNR) G349.7+0.2. The remnant has an irregular shell morphology and is interacting with a molecular cloud, evident from the presence of OH(1720 MHz) masers and shocked molecular gas. The…

天体物理学 · 物理学 2009-11-07 P. Slane , Y. Chen , J. S. Lazendic , J. P. Hughes

We have carried out 12CO, 13CO, and C18O observations toward the mixed morphology supernova remnant (SNR) IC 443. The observations cover a 1.5*1.5 deg^2 area and allow us to investigate the overall molecular environment of the remnant. Some…

太阳与恒星天体物理 · 物理学 2014-05-29 Yang Su , Min Fang , Ji Yang , Ping Zhou , Yang Chen

Aims. We aim to investigate the molecular environment of the supernova remnant (SNR) G150.3+4.5, and explore its association with ambient molecular clouds (MCs). Methods. We present large-field CO (J=1-0) molecular line observations toward…

星系天体物理 · 物理学 2024-06-26 Jian-Cheng Feng , Xuepeng Chen , Yang Su , Li Sun , Shiyu Zhang , Xin Zhou , Weihua Guo

We present the results of CO emission line observations toward the semicircular Galactic supernova remnant (SNR) 3C434.1 (G94.0+1.0). We mapped an area covering the whole SNR in the 12CO J=1-0 emission line using the Seoul Radio Astronomy…

高能天体物理现象 · 物理学 2015-06-15 Il-Gyo Jeong , Bon-Chul Koo , Wan-Kee Cho , Carsten Kramer , Jürgen Stutzki , Do-Young Byun

Galactic supernova remnants (SNRs) play an important role in our understanding of supernovae and their feedback on the interstellar environment. SNR G352.7$-$0.1 is special for its thermal composite morphology and double-ring structure. We…

高能天体物理现象 · 物理学 2023-07-24 Qian-Qian Zhang , Ping Zhou , Yang Chen , Xiao Zhang , Wen-Juan Zhong , Xin Zhou , Zhi-Yu Zhang , Jacco Vink

The investigation of the interaction between the supernova remnants (SNRs) and interstellar gas is not only necessary to improve our knowledge of SNRs, but also to understand the nature of the progenitor systems. As a part of the Milky Way…

星系天体物理 · 物理学 2017-07-26 Xuepeng Chen , Fang Xiong , Ji Yang

We report new CO observations and a detailed molecular-line study of the mixed morphology (MM) supernova remnant (SNR) G359.1-0.5, which contains six OH (1720 MHz) masers along the radio shell, indicative of shock-cloud interaction.…

星系天体物理 · 物理学 2020-02-26 L. K. Eppens , E. M. Reynoso , J. Lazendic-Galloway , J. A. Combi , J. F. Albacete Colombo , -

We present molecular-line observations at millimetre, centimetre and infrared wavelengths of the region containing OH(1720 MHz) masers in the supernova remnant (SNR) G349.7+0.2, using the Australia Telescope (AT) Mopra antenna, the…

天体物理学 · 物理学 2011-04-20 J. S. Lazendic , M. Wardle , J. B. Whiteoak , M. G. Burton , A. J. Green

The environs of three supernova remnants (SNR) with associated OH 1720 MHz masers, G349.7+0.2, CTB 37A and G16.7+0.1, have been surveyed in the CO J=1-0 transition with the 12 Meter Telescope of the NRAO, using the On-The-Fly technique.…

天体物理学 · 物理学 2009-10-31 Estela M. Reynoso , Jeffrey G. Mangum

We have carried out 12CO (J=1-0 and 2-1), 13CO (J=1-0), and C18O (J=1-0) observations in the direction of the supernova remnant (SNR) G22.7-0.2. A filamentary molecular gas structure, which is likely part of a larger molecular complex with…

太阳与恒星天体物理 · 物理学 2015-06-23 Yang Su , Ji Yang , Xin Zhou , Ping Zhou , Yang Chen

N103B is a Type Ia supernova remnant (SNR) in the Large Magellanic Cloud (LMC). We carried out new $^{12}$CO($J$ = 3-2) and $^{12}$CO($J$ = 1-0) observations using ASTE and ALMA. We have confirmed the existence of a giant molecular cloud…

The shell-type supernova remnant (SNR) G206.7+5.9 was recently discovered in the radio band with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The remnant spans about 3.5 in diameter and exhibits bilateral shells. In…

高能天体物理现象 · 物理学 2025-01-29 Hicran Bakis , Ebru Aktekin , Volkan Bakis , Hidetoshi Sano , Aytap Sezer

We carried out new CO($J$ = 2-1) observations toward the mixed-morphology supernova remnant (SNR) W49B with the Atacama Large Millimeter/submillimeter Array (ALMA). We found that CO clouds at $\sim$10 km s$^{-1}$ show a good spatial…

高能天体物理现象 · 物理学 2021-10-05 H. Sano , S. Yoshiike , Y. Yamane , K. Hayashi , R. Enokiya , K. Tokuda , K. Tachihara , G. Rowell , M. D. Filipović , Y. Fukui

G349.7 + 00.2 is a young Galactic supernova remnant (SNR) with a mushroom morphology in radio and X-rays, and it has been detected across the entire electromagnetic spectrum from radio to high energy $\gamma$-rays. Moreover, the remnant is…

高能天体物理现象 · 物理学 2020-09-30 Jing-Wen Yan , Chun-Yan Lu , Lu Wen , Huan Yu , Jun Fang

RX J0046.5$-$7308 is a shell-type supernova remnant (SNR) in the Small Magellanic Cloud (SMC). We carried out new $^{12}$CO($J$ = 1-0, 3-2) observations toward the SNR using Mopra and the Atacama Submillimeter Telescope Experiment. We found…

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