Discovery of a young nearby supernova remnant

  title={Discovery of a young nearby supernova remnant},
  author={B. Aschenbach},
About 200 supernova remnants have been found in the galaxy, six of which are younger than about 1,000 years (ref. 2). Observations of these young remnants are important for understanding of the late phases of supernova evolution, and each new object should add substantially to our knowledge of the processes involved. Here I report the discovery of a supernova remnant (RXJ0852.0 − 4622), identified by its X-ray emission, at the southeast corner of the known Vela supernova remnant. The high… Expand
Emission from 44Ti associated with a previously unknown Galactic supernova
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The Progenitor of the New COMPTEL/ROSAT Supernova Remnant in Vela
We show that (1) the newly discovered supernova remnant (SNR) GRO J0852-4642/RX J0852.0-4622 was created by a core-collapse supernova of a massive star and (2) the same supernova event that producedExpand
The Slow X-Ray Expansion of the Northwestern Rim of the Supernova Remnant RX J0852.0–4622
The detection of the radioactive decay line of 44Ti provides unique evidence that the γ-ray source is a young (<1000 yr) supernova remnant because of the short 44Ti lifetime of ~90 yr. Only twoExpand
Footprints of the newly discovered Vela supernova in Antarctic ice cores
The recently discovered, nearby young supernova remnant in the southeast corner of the older Vela supernova remnant may have been seen in measurements of nitrate abundances in Antarctic ice cores.Expand
Discovery of 35 New Supernova Remnants in the Inner Galaxy
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Is Vela Jr. a young supernova remnant
Abstract The supernova remnant RX J0852.0-4622 (or Vela Jr.) has been considered to be very young (∼680 yr) based mainly on the possible detection of a radioactive decay line of 44 Ti whose lifetimeExpand
Radio Detection of the Supernova Remnant RX J0852.0–4622
The X-ray source RX J0852.0-4622 has been recently proposed as a candidate for a young nearby supernova remnant on the basis of its X-ray (≥1.3 keV) morphology, inferred internal shock velocities,Expand
An Optical Nebula Associated with a Young X-Ray Supernova Remnant in Vela
A remarkable filamentary nebula (RCW 37) in the close vicinity of the newly discovered X-ray-emitting supernova remnant in Vela (RX J0852.0-4622) is investigated. This supernova explosion is arguablyExpand
44Ti decay gamma-ray emission from young galactic supernova remnants
The discovery by COMPTEL of the 44Ti line emission at 1.16 MeV from the youngest known Galactic supernova remnant (SNR) Cas A has opened a new window for the investigation of SNR properties. ThisExpand
Continuum Gamma Ray Emission from Supernova Remnants
Supernova remnants are the dramatic objects produced by the violent explosions of massive stars at the end of their life. This explosion, called a supernova, is one of the most energetic events inExpand


Emission from 44Ti associated with a previously unknown Galactic supernova
Nearly 400 years have passed since a supernova was last observed directly in the Milky Way (by Kepler, in 1604). Numerous Galactic supernovae are expected to have occurred since then, but only oneExpand
The Vela supernova remnant and the Gum nebula: new perspectives at 2.4 GHz
Sensitive, polarimetric observations are presented for the region of the Galactic plane 276°~1~238°, with a latitude coverage of +5°~b~ _80 over most of this range. These observations were made usingExpand
Radio Emission from the Supernova Remnant Vela-X
Radio observations are presented of the fairly large galactic complex Vela-X, Y, and Z. These sources are believed to be the remnant of a supernova having an optical identification with theExpand
A High-Resolution Radio Survey of the Vela Supernova Remnant
This paper presents a high-resolution radio continuum (843 MHz) survey of the Vela supernova remnant. The contrast between the structures in the central pulsar-powered nebula of the remnant and theExpand
Synchrotron Models for X-Rays from the Supernova Remnant SN 1006
Recent observations with the ASCA satellite (Koyama et al. 1995) have finally settled the question of the nature of the X-ray spectrum from the remnant of the supernova of 1006 AD. The bright rimsExpand
Molecular clouds in Vela.
The strong ridge of CO emission in the Vela direction discovered in the May J. et al. (1988, Astron. Astrophys. Supp. Ser., 73) wide angle 0.5° resolution survey is analyzed in detail. CorrelationsExpand
Discovery of explosion fragments outside the Vela supernova remnant shock-wave boundary
THE nearby (500 pc) Vela supernova remnant has presented several puzzles. Its true shape has been difficult to determine1, and as a result it has never been clear whether the pulsar seen in that partExpand
A Catalogue of Galactic Supernova Remnants
This catalogue of Galactic supernova remnants (SNRs) is an updated version of those presented in detail in Green (1984, 1988), in summary form in Green (1991, 1996) — hereafter Versions I, II, IIIExpand
X-Ray and Optical Imagery of the SN 1006 Supernova Remnant
We present a high-resolution X-ray image of SN 1006: a mosaic of four ROSAT HRI images that together cover the entire supernova remnant. A well-defined shock front is observed surrounding the remnantExpand
Evidence for shock acceleration of high-energy electrons in the supernova remnant SN1006
HIGH-ENERGY cosmic rays (relativistic heavy nuclei) play an important role in heating interstellar matter in the Milky Way1,2, and they affect chemical abundances through collisions with atoms in theExpand