Wikipedia

G299.2-2.9

G299.2-2.9 is a supernova remnant in the Milky Way, 16,000 light years from Earth.[2] It is the remains of a Type Ia supernova.[3] The observed radius of the remnant shell translates to approximately 4,500 years of expansion,[4] making it one of the oldest observed Type Ia supernova remnants.[5]

G299.2-2.9
Shell structure of G299.2-2.9
Event typeSupernova remnant Edit this on Wikidata
SN Ia
ConstellationMusca
Right ascension12h 15m 13.0s[1]
Declination−65° 30′ 00″[1]
EpochJ2000
Distance16,000 ly
RemnantMixed Morphology
HostMilky Way
Notable featuresComplex outer shell structure
Other designationsSNR G299.2-02.9
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Description

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G299.2-2.9 gives astronomers an opportunity to study how supernova remnants evolve and warp over time. G299.2-2.9 also provides a glimpse of the explosion that produced it. G299.2-2.9 is split into several distinct and different regions: an almost complete bubble interrupted only by a blow-out, a bright center, a complex "knot" region on the northeastern edge of the bubble structure and a diffuse emission extending beyond the main structure.[6] It has been heavily documented by multiple satellites and in-orbit telescopes, including the Hubble Space Telescope, Spitzer Telescope,[7] and Chandra.[8]

The small X-ray emission from the deep portions of G299.2-2.9 shows large quantities of iron and silicon,[9] which indicates that it is a remnant of a Type Ia supernova. The outer "shell" is large and complex, with a multi-shell structure. Outer shells similar to G299.2-2.9 are usually not associated with exploded stars.[10] Since theories about Type Ia supernovae assume they go off in a specified environment, detailed studies of the outer "shell" of G299.2-2.9 have helped astronomers[11] improve their understanding of the areas and situations where thermonuclear explosions occur.[12]

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    Composite image using X-ray light from Chandra (orange) that has been overlaid on an infrared image from 2MASS.[13]
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    Red, green and blue represent low, medium and high-energy X-rays – Chandra.[13]
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    Chandra X-ray Observatory – NASA.[13]

References

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  1. ^ a b "SNR G299.2-02.9". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-11-18.
  2. ^ Park, Sangwook; Slane, Patrick O.; Hughes, John P.; Mori, Koji; Burrows, David N.; Garmire, Gordon P. (2007-08-20). "Chandra X-Ray Study of Galactic Supernova Remnant G299.2-2.9". The Astrophysical Journal. 665 (2): 1173–1181. arXiv:0706.0524. Bibcode:2007ApJ...665.1173P. doi:10.1086/520105. ISSN 0004-637X.
  3. ^ "INSPIRE". inspirehep.net. Retrieved 2024-03-21.
  4. ^ Park, Sangwook; Slane, Patrick O.; Hughes, John P.; Mori, Koji; Burrows, David N.; Garmire, Gordon P. (2007-08-20). "Chandra X-Ray Study of Galactic Supernova Remnant G299.2–2.9". The Astrophysical Journal. 665 (2): 1173. arXiv:0706.0524. Bibcode:2007ApJ...665.1173P. doi:10.1086/520105. ISSN 0004-637X.
  5. ^ "Supernovas & Supernova Remnants | ChandraBlog | Fresh Chandra News". chandra.harvard.edu. Retrieved 2024-04-18.
  6. ^ "European Association for Astronomy Education » G299.2-2.9: A Middle-Aged Supernova Remnant". Retrieved 2024-03-21.
  7. ^ JPL/NASA. "Telescopes help solve ancient supernova mystery". phys.org. Retrieved 2024-04-18.
  8. ^ Institution, Smithsonian. "A Tour of G299.2-2.9". Smithsonian Institution. Retrieved 2024-04-18.
  9. ^ "Chandra :: Photo Album :: G299.2-2.9 :: October 12, 2011". chandra.harvard.edu. Retrieved 2024-03-21.
  10. ^ Studio, NASA Scientific Visualization (2011-04-27). "NASA Scientific Visualization Studio | Tycho's Supernova Remnant: NASA'S Chandra Finds New Evidence on Origin of Supernovas". NASA Scientific Visualization Studio. Retrieved 2024-04-18.
  11. ^ "SNRcat - G299.2-02.9". snrcat.physics.umanitoba.ca. Retrieved 2024-03-21.
  12. ^ Slane, Patrick; Vancura, Olaf; Hughes, John P. (1996). "A study of the evolutionary state of the supernova remnant G299.2-2.9". Astrophysical Journal. 465 (2 PART I): 840–844. Bibcode:1996ApJ...465..840S. doi:10.1086/177467. ISSN 0004-637X.
  13. ^ a b c "Chandra :: Photo Album :: G299.2-2.9 :: February 12, 2015". chandra.harvard.edu. Retrieved 2024-03-21.
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