G299.2-2.9

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G299.2-2.9
Nadnova G299.2-2.9.jpg
Shell structure of G299.2-2.9
Event type Supernova remnant   OOjs UI icon edit-ltr-progressive.svg
SN Ia
Constellation Musca
Right ascension 12h 15m 13.0s [1]
Declination −65° 30′ 00″ [1]
Epoch J2000
Distance16,000 ly
RemnantMixed Morphology
Host Milky Way
Notable featuresComplex outer shell structure
Other designationsSNR G299.2-02.9
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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]

Contents

Description

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]

References

  1. 1 2 "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. 1 2 3 "Chandra :: Photo Album :: G299.2-2.9 :: February 12, 2015". chandra.harvard.edu. Retrieved 2024-03-21.
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