The Three-dimensional Structure of the Cassiopeia A Supernova Remnant. I. The Spherical Shell

Reed, J.; Hester, J. J.; Fabian, A. C.; Winkler, P. F.

doi:10.1086/175308

Cited by 397 publications

(430 citation statements)

References 0 publications

Supporting

Mentioning

402

Contrasting

Order By: Relevance

“…It is unclear why the structure in Tycho extends as far as it does toward the forward shock (Seward, Gorenstein, & Tucker 1983 ;Dickel et al 1991 ;Chevalier, Blondin, & Emmering 1992). It is unclear what the origin of the knots in Cas A may be (Anderson & Rudnick 1995 ;Reed et al 1995 ;Keohane, Rudnick, & Anderson 1996). The impending collision of the ejecta of SN 1987A with its ring seems likely to provide further puzzles (Borkowski, Blondin, & McCray 1997a, 1997b.…”

Section: Introductionmentioning

confidence: 99%

Progress toward the Laboratory Simulation of Young Supernova Remnants

Drake

Smith

Carroll

et al. 2000

ASTROPHYS J SUPPL S

View full text Add to dashboard Cite

Progress in experiments to simulate the hydrodynamics of supernova remnants (SNRs) in the laboratory is reported. The experiment design involves shock heating of a dense material, which expands to become the ejecta that drive a blast wave through low-density foam. In the design, a variety of issues, such as radiative preheat of the unshocked matter, had to be addressed. A careful analysis of the scaling between hydrodynamic systems shows that the experiment is a good, scaled model of a local region in a young SNR. Measurements of the basic hydrodynamic behavior for two blast-wave velocities are nearly complete. Measurements of hydrodynamic instabilities at the contact surface between the ejecta and the low-density matter will commence in the near future.

show abstract

Section: Introductionmentioning

confidence: 99%

Progress toward the Laboratory Simulation of Young Supernova Remnants

Drake

Smith

Carroll

et al. 2000

ASTROPHYS J SUPPL S

View full text Add to dashboard Cite

show abstract

“…Cas A is believed to be the remnant of the explosion of a massive (20-30 M ⊙ ) progenitor star, which occurred around 320-340 yrs ago at a distance of 3.4 kpc. 15,16 Cas A was observed with the SCUBA 17 array on the JCMT in June 1998. The 850µm image is presented in Fig.…”

mentioning

confidence: 99%

Type II supernovae as a significant source of interstellar dust

Dunne

Eales

Ivison

et al. 2003

Nature

253

323

View full text Add to dashboard Cite

Large amounts of dust (> 10 8 M ⊙ ) have recently been discovered in high redshifts quasars 1,2 and galaxies 3−5 , corresponding to a time when the Universe was less than one-tenth of its present age. The stellar winds produced by stars in the late stages of their evolution (on the asymptotic giant branch of the Hertzsprung-Russell diagram) are though to be the main source of dust in galaxies, but they cannot produce that dust on a short-enough timescale 6 (< 1 Gyr) to explain the results in the high-redshift galaxies.Supernova explosions of massive stars (type II) are also a potential source, with models predicting 0.2-4 M ⊙ of dust 7−10 . As massive stars evolve rapidly, on timescales of a few Myr, these supernovae could be responsible for the high-redshift dust. Observations 11−13 of supernova remnants in the Milky Way, however, have hitherto revealed only 10 −7 − 10 −3 M ⊙ of dust each, which is insufficient to explain the high-redshift data. Here we report the detection of ∼ 2 − 4 M ⊙ of cold dust in the youngest known Galactic remnant, Cassiopeia A. This observation implies that supernovae are at least as important as stellar winds in producing dust in our Galaxy and would have been the dominant source of dust at high redshifts.Over the past three decades, many searches for dust in supernova remnants (SNR) have been made in the mid and far-infrared (6-100µm). Remnants must be studied when they are young, before they have swept up large masses of interstellar material which makes it difficult to distinguish dust formed in the ejecta from that present in the ISM prior to the explosion. The handful of Galactic remnants which are both young and close enough (Cas A, Kepler and Tycho) have been studied with the Infrared Astronomical Satellite (IRAS) and the Infrared Space Observatory (ISO), but although dust at 100-200 K has been detected, the dust mass deduced is only 10 −7 − 10 −3 M ⊙ , many orders of magnitude lower than the solar mass quantities predicted. 11−13 The formation of dust in the recent supernova 1987A has been implied indirectly from the fading of the silicate line and increase in 10µm emission, 14 although the quantity is heavily dependant on the assumptions made 1

show abstract

“…Assuming an age for Cas A of 320 yr [38]. and a distance of 3.4 kpc [33], the combined CGROComptel and BeppoSAX detections translate into an initial 44 Ti mass of (1.8 ± 0.3) × 10 −4 M . This is higher than expected based on the standard nucleosynthesis models [2], but consistent with either large scale explosion asymmetries or a higher explosion energy (2 × 10 51 erg instead of 10 51 erg, see also [34]).…”

Section: Core Collapse Remnantsmentioning

confidence: 98%

A Review of X-ray Observations of Supernova Remnants

Vink

2004

Nuclear Physics B - Proceedings Supplements

View full text Add to dashboard Cite

The Three-dimensional Structure of the Cassiopeia A Supernova Remnant. I. The Spherical Shell

Cited by 397 publications

References 0 publications

Progress toward the Laboratory Simulation of Young Supernova Remnants

Progress toward the Laboratory Simulation of Young Supernova Remnants

Type II supernovae as a significant source of interstellar dust

A Review of X-ray Observations of Supernova Remnants

Contact Info

Product

Resources

About