RX J0852.0−4622

RX J0852.0−4622 (also known as G266.2−1.2) is a supernova remnant. The remnant is located in the southern sky in the constellation Vela ("sail"), and sits (in projection) inside the much larger and older Vela Supernova Remnant. For this reason, RX J0852.0−4622 is often referred to as Vela Junior (Vela Jr.).[1][2][3]

RX J0852.0−4622 or Vela Junior
Event typeSupernova remnant Edit this on Wikidata
SN
Date1998
ConstellationVela
Right ascension08h 52m
Declination−46° 22′
EpochJ2000.0
Galactic coordinates286.9460 +42.4568 (34" W, 10" S)
Distance700 ly
RemnantCXOU J085201.4-461753
Notable featuresCould be associated with PSR J0855−4644.
central object in SNR RX J0852.0−4622 = AX J0851.9−4617.
Other designationsSNR G266.2-01.2, SNR G266.3-01.2, 3FHL J0851.9-4620e, RX J0852.0-4622, 2FGL J0851.7-4635, 3FGL J0852.7-4631e, 2FHL J0852.8-4631, 2FHL J0852.8-4631e

It was found in 1998[4] when gamma ray emissions from the decay of 44Ti nuclei were discovered using the Imaging Compton Telescope (COMPTEL).

The distance to this object is controversial, but some scientists argue that the supernova remnant is only about 650–750 light-years away, and exploded comparatively recently (as seen from Earth), perhaps within the last 800 years. If the remnant is indeed young and nearby, its corresponding supernova should have been visible from the Earth around 1271 CE. Written accounts from Japan in late 1271 CE and early 1272 CE describe what may have been sightings of the supernova over the horizon near Kamakura, Japan in the early-morning hours of 13 September 1271.[4][5][6][7]

The central compact object (CCO) was discovered in 2001.[8] In the initial Chandra X-ray image and deeper images thereafter, no pulsations were detected from the compact remnant, which is believed to be the neutron star CXOU J085201.4-461753.

References
  1. SNRcat: Supernova Remnant G266.2-01.2
  2. Michelle Starr: The Rings of Ancient Trees May Hold Tales of Epic Space Explosions, on: sciencealert, 14 November 2020
  3. Allen, G. E.; Chow, K.; Delaney, T.; Filipović, M. D.; Houck, J. C.; Pannuti, T. G.; Stage, M. D. (2014). "ON THE EXPANSION RATE, AGE, AND DISTANCE OF THE SUPERNOVA REMNANT G266.2–1.2 (Vela Jr.)". The Astrophysical Journal. 798 (2): 82. doi:10.1088/0004-637X/798/2/82. hdl:1721.1/94531. S2CID 11391141.
  4. Iyudin, A. F.; Schönfelder, V.; Bennett, K.; Bloemen, H.; Diehl, R.; Hermsen, W.; Lichti, G. G.; Van Der Meulen, R. D.; Ryan, J.; Winkler, C. (1998). "Emission from 44Ti associated with a previously unknown Galactic supernova". Nature. 396 (6707): 142–144. Bibcode:1998Natur.396..142I. doi:10.1038/24106. S2CID 4430526.
  5. Aschenbach, B. (1998). "Discovery of a young nearby supernova remnant" (PDF). Nature. 396 (6707): 141–142. Bibcode:1998Natur.396..141A. doi:10.1038/24103. S2CID 4426317.
  6. "Polynesian origins of the Maori in New Zealand and the supernova RX J0852.0-4622". February 2019. Retrieved 30 May 2022. {{cite journal}}: Cite journal requires |journal= (help)
  7. "Footprints of the newly discovered Vela supernova in Antarctic Ice Cores". February 2019. Retrieved 27 September 2020. {{cite journal}}: Cite journal requires |journal= (help)
  8. Pavlov, G. G.; Sanwal, D.; Kiziltan, B.; Gairmire, G. P. (2001). "The Compact Central Object in the RX J0852.0−4622 Supernova Remnant". The Astrophysical Journal. 559 (2): L131. arXiv:astro-ph/0108150. Bibcode:2001ApJ...559L.131P. doi:10.1086/323975. S2CID 8439326.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.