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High resolution millimeter-wave and near-infrared observations of the supernova remnants W28 and W44 reveal extensive shocked molecular gas where supernova blast waves are propagating into giant molecular clouds. New CO observations were…

Astrophysics · Physics 2014-10-13 William T. reach , Jeonghee Rho , T. H. Jarrett

We present near- and mid-infrared observations on the shock-cloud interaction region in the southern part of the supernova remnant HB 21, performed with the InfraRed Camera (IRC) aboard AKARI satellite and the Wide InfraRed Camera (WIRC) at…

High Energy Astrophysical Phenomena · Physics 2015-05-14 Jong-Ho Shinn , Bon-Chul Koo , Michael G. Burton , Ho-Gyu Lee , Dae-Sik Moon

We have searched for HI 21 cm line emission from shocked atomic gas associated with southern supernova remnants (SNRs) using data from the Southern Galactic Plane Survey. Among the 97 sources studied, we have detected 10 SNRs with…

Astrophysics · Physics 2017-01-18 Bon-Chul Koo , Ji-hyun Kang , N. M. McClure-Griffiths

Shock waves from supernova remnants (SNRs) have strong influence on the physical and chemical properties of molecular clouds (MCs). Shocks propagating into magnetized MCs can be classified into "jump" J-shock and "continuous" C-shock. The…

Astrophysics of Galaxies · Physics 2025-01-22 Tian-Yu Tu , Valentine Wakelam , Yang Chen , Ping Zhou , Qian-Qian Zhang

We study Gamma-ray supernova remnant W49B and its environment using recent radio and infrared data. {\it Spitzer} IRS low resolution data of W49B shows shocked excitation lines of H$_{2}$ (0,0) S(0)-S(7) from the SNR-molecular cloud…

Solar and Stellar Astrophysics · Physics 2015-06-22 H. Zhu , W. W. Tian , P. Zuo

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,…

Astrophysics of Galaxies · Physics 2016-12-28 J. Rho , J. Bieging , J. Hewitt , M. Andersen , W. T. Reach , R. Guesten

We present the detections of shocked molecular hydrogen (H2) gas in near- and mid-infrared and broad CO in millimeter from the mixed-morphology supernova remnant (SNR) HB~3 (G132.7+1.3) using Palomar WIRC, the Spitzer GLIMPSE360 and WISE…

Astrophysics of Galaxies · Physics 2021-08-25 J. Rho , T. H. Jarrett , L. N. Tram , W. Lim , W. T. Reach , J. Bieging , H. -G. Lee , B. -C. Koo , B. Whitney

The W28 supernova remnant is an excellent prototype for observing shocked gas resulting from the interaction of supernova remnants (SNRs) and adjacent molecular clouds (MCs). We present two new signatures of shocked molecular gas in this…

Astrophysics · Physics 2016-08-30 F. Yusef-Zadeh , M. Wardle , D. A. Roberts

We present near- and mid-infrared observations on the shock-cloud interaction region in the northern part of the supernova remnant HB21, performed with the InfraRed Camera (IRC) aboard AKARI satellite and the Wide InfraRed Camera (WIRC) at…

Astrophysics · Physics 2011-02-11 Jong-Ho Shinn , Bon-Chul Koo , Michael G. Burton , Ho-Gyu Lee , Dae-Sik Moon

We briefly summarize the survey of HI 21 cm emission lines to search for shocked atomic gas associated with Galactic supernova remnants (SNRs) in the southern sky. For G347.3-0.5, we discuss the distance to the SNR and the implications of…

Astrophysics · Physics 2007-05-23 Bon-Chul Koo , Ji-hyun Kang , Naomi McClure-Griffiths

We performed millimeter observations in CO lines toward the supernova remnant (SNR) HB 3. Substantial molecular gas around -45 km s^-1 is detected in the conjunction region between the SNR HB 3 and the nearby W3 complex. This molecular gas…

Astrophysics of Galaxies · Physics 2016-12-14 Xin Zhou , Ji Yang , Min Fang , Yang Su , Yan Sun , Yang Chen

Using the PMO 13.7m telescope, we present large-field and high-sensitivity CO(1-0) line observations toward the Crab Nebula, in order to better understand the interstellar gas environment of this well-known historical supernova remnant. The…

Astrophysics of Galaxies · Physics 2025-09-17 Xuepeng Chen , Dong Wang , Qianru He , Jiancheng Feng , Shiyu Zhang , Li Sun , Yang Su

Supernovae and their remnants provide energetic feedback to the ambient interstellar medium (ISM), which is often distributed in multiple gas phases. Among them, warm molecular hydrogen (H$_2$) often dominates the cooling of the shocked…

Astrophysics of Galaxies · Physics 2022-11-29 Yunwei Deng , Zhi-Yu Zhang , Ping Zhou , Junzhi Wang , Min Fang , Lingrui Lin , Fuyan Bian , Zhiwei Chen , Yong Shi , Guoyin Chen , Hui Li

We present the results of a detailed investigation into the physical conditions in interstellar material interacting with the supernova remnant IC 443. Our analysis is based on a comprehensive examination of high-resolution far-ultraviolet…

The field just West of the galactic supernova remnant W28 (l=6.4\degr, b=-0.2\degr) harbors 3 of 5 newly-discovered 1720 OH maser spots and two recently-discovered candidate supernova candidates (one of which is a $\gamma$-ray source), as…

Astrophysics of Galaxies · Physics 2015-05-13 H. S. Liszt

We have undertaken a study of radio and infrared molecular-line emission towards several SNRs in order to investigate molecular signatures of SNR shocks, and to test models for OH maser production in SNRs. Here we present results on…

Astrophysics · Physics 2007-05-23 J. S. Lazendic , M. Wardle , A. J. Green , J. B. Whiteoak , M. G. Burton

We mapped molecular gas toward the supernova remnant W44 in the HCO+ J=1-0 line with the Nobeyama Radio Observatory 45 m telescope and in the CO J=3-2 line with the Atacama Submillimeter Telescope Experiment 10 m telescope. High-velocity…

Astrophysics of Galaxies · Physics 2015-06-16 Tomoro Sashida , Tomoharu Oka , Kunihiko Tanaka , Kazuya Aono , Shinji Matsumura , Makoto Nagai , Masumichi Seta

We present 7mm Mopra observations of the dense molecular gas towards the W28 supernova remnant (SNR) field, following a previous 12mm line survey of this region. These observations take advantage of the 7mm beam size to probe the dense and…

High Energy Astrophysical Phenomena · Physics 2015-05-30 B. P. Nicholas , G. Rowell , M. G. Burton , A. J. Walsh , Y. Fukui , A. Kawamura , N. I. Maxted

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.…

Astrophysics · Physics 2009-10-31 Estela M. Reynoso , Jeffrey G. Mangum

We report the detection of shock-excited far-infrared emission of H2O, OH, and CO from the supernova remnant 3C 391, using the ISO Long-Wavelength Spectrometer. This is the first detection of thermal H2O and OH emission from a supernova…

Astrophysics · Physics 2009-10-30 William T. Reach , Jeonghee Rho
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