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相关论文: Supernova Shocks in Molecular Clouds: Shocks Drive…

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Supernovae from core-collapse of massive stars drive shocks into the molecular clouds from which the stars formed. Such shocks affect future star formation from the molecular clouds, and the fast-moving, dense gas with compressed magnetic…

星系天体物理 · 物理学 2019-11-06 William T. Reach , Le Ngoc Tram , Matthew Richter , Antoine Gusdorf , Curtis DeWitt

New observations of the supernova remnant 3C391 are in the H2 2.12 micron and [Fe II] 1.64 micron narrow-band filters at the Palomar 200-inch telescope, and in the 5-15 micron CVF on ISOCAM. Shocked H2 emission was detected from the region…

天体物理学 · 物理学 2009-11-07 William T. Reach , Jeonghee Rho , T. H. Jarrett , Pierre-Olivier Lagage

Molecular clouds are known to be clumpy, with dense molecular clumps occupying only a few percent of the volume. A supernova remnant then evolves primarily in the interclump medium, and becomes radiative at a radius of about 6 pc, forming a…

天体物理学 · 物理学 2009-10-30 Roger A. Chevalier

The Galactic supernova remnant (SNR) IC443 is one of the most studied core-collapse SNRs for its interaction with molecular clouds. However, the ambient molecular clouds with which IC443 is interacting have not been thoroughly studied and…

星系天体物理 · 物理学 2015-06-04 Jae-Joon Lee , Bon-Chul Koo , Ronald L. Snell , Min S. Yun , Mark H. Heyer , Michael G. Burton

How Supernova Remnant (SNR) shocks impact nearby molecular clouds is still poorly observationally constrained. It is unclear if SNRs can positively or negatively affect clouds star formation potential. We have studied the dense gas…

Using the IRAM 30-m telescope, we observed the supernova remnant 3C 391 (G31.9+0.0) and its surroundings in the CO(2-1), HCO+(1-0), CS(2-1), CS(3-2), and CS(5-4) lines. The ambient molecular gas at the distance (9 kpc) of the remnant…

天体物理学 · 物理学 2009-10-30 William T. Reach , Jeonghee Rho

We present Infrared Space Observatory spectroscopy of sites in the supernova remnants W28, W44, and 3C391, where blast waves are impacting molecular clouds. Atomic fine-structure lines were detected from C, N, O, Si, P, and Fe. The S(3) and…

天体物理学 · 物理学 2009-10-31 William T. Reach , Jeonghee Rho

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…

星系天体物理 · 物理学 2025-01-22 Tian-Yu Tu , Valentine Wakelam , Yang Chen , Ping Zhou , Qian-Qian Zhang

With Spitzer IRS we have obtained sensitive low-resolution spectroscopy from 5 to 35 microns for six supernova remnants (SNRs) that show evidence of shocked molecular gas: Kes 69, 3C 396, Kes 17, G346.6-0.2, G348.5-0.0 and G349.7+0.2.…

太阳与恒星天体物理 · 物理学 2011-02-11 John W. Hewitt , Jeonghee Rho , Morten Andersen , William T. Reach

Molecular emission arising from the interactions of supernova remnant (SNR) shock waves and molecular clouds provide a tool for studying the dispersion and compression that might kick-start star formation as well as understanding cosmic ray…

星系天体物理 · 物理学 2024-03-04 Nguyen Fuda , Le-Ngoc Tram , William T. Reach

The diffuse interstellar medium is dynamic, and its chemistry and evolution is determined by shock fronts as well as photodissociation. Shocks are implied by the supersonic motions and velocity dispersion often statistically called…

星系天体物理 · 物理学 2021-03-17 William T. Reach , Carl Heiles

IC 443 is a well-known supernova remnant that stands out due to its interaction with a dense molecular cloud, creating a complex environment where shocks can efficiently accelerate particles to high energies. This makes it a key target for…

高能天体物理现象 · 物理学 2025-10-06 Alison M. W. Mitchell , Lukas Grosspietsch , Tina Wach

Supernova remnants (SNRs) contribute to regulate the star formation efficiency and evolution of galaxies. As they expand into the interstellar medium (ISM), they transfer vast amounts of energy and momentum that displace, compress and heat…

Cosmic-ray and X-ray ionisations in molecular gas produce a weak far-ultraviolet flux through the radiative decay of H2 molecules that have been excited by collisions with energetic electrons (the Prasad-Tarafdar mechanism). I consider the…

天体物理学 · 物理学 2009-10-31 Mark Wardle

Low-velocity large-scale shocks impacting on the ISM may efficiently shape molecular clouds and trigger star formation within them. These shocks, both driven by galactic bubbles and/or cloud-cloud collisions, leave specific signatures in…

星系天体物理 · 物理学 2025-09-24 G. Cosentino , I. Jiménez-Serra , R. Liu , C. -Y. Law , J. C. Tan , J. D. Henshaw , A. T. Barnes , F. Fontani , P. Caselli , S. Viti

Within a few parsecs around the central Black Hole Sgr A*, chemistry in the dense molecular cloud material of the circumnuclear disk (CND) can be affected by many energetic phenomena such as high UV-flux from the massive central star…

We carried out new $^{12}$CO($J$ = 1-0, 3-2) observations of a N63A supernova remnant (SNR) from the LMC using ALMA and ASTE. We find three giant molecular clouds toward the northeast, east, and near the center of the SNR. Using the ALMA…

RX J1713.7-3946 is one of the TeV {\gamma}-ray supernova remnants (SNRs) emitting synchrotron X rays. The SNR is associated with molecular gas located at ~1 kpc. We made new molecular observations toward the dense cloud cores, peaks A, C…

We have carried out optical observations of the north-eastern part of the supernova remnant IC 443 using the CFHT imaging spectrograph SITELLE. The observations consist of three multispectral cubes covering an 11$^{\prime}$…

星系天体物理 · 物理学 2019-09-04 Alexandre Alarie , Laurent Drissen

We present maps of a large number of dense molecular gas tracers across the Central Molecular Zone of our Galaxy. The data were taken with the CSIRO/CASS Mopra telescope in Large Projects in the 1.3cm, 7mm, and 3mm wavelength regimes. Here,…

星系天体物理 · 物理学 2015-06-18 Juergen Ott , Michael Burton , Paul Jones , David S. Meier
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