请输入您要查询的百科知识:

 

词条 LMC N49
释义

  1. References

{{sky|05|26|01.00|-|66|05|06.0|165000}}{{Infobox nebula
|name = LMC N49
|image = Sig06-030.jpg
|caption =
|credit =
|type = Supernova remnant
|type2 =
|epoch = J2000.0[1]
|subtype =
|class =
|ra = {{RA|05|26|01.00}}[1]
|dec = {{DEC|-66|05|06.0}}[1]
|dist_ly = 160,000[4]
|dist_pc =
|dist_z =
|appmag_v = 12.71[1]
|appdia =
|size_v =
|constellation = Dorado
|radius_ly =
|radius_pc =
|dimensions = 75 ly across[4]
|absmag_v =
|notes =
|names = LMC N49,[1] PKS 0525-66,[1] PKS B0525-661,[1] PKS J0525-6604,[1] SNR J052559-660453[1]
}}{{commonscat|N49}}N49 or LMC N49 (PKS 0525-66,[1] PKS B0525-661, PKS J0525-6604, SNR J052559-660453[1]) is the brightest supernova remnant in the Large Magellanic Cloud, approximately 160,000 light-years from Earth. Its form has been assessed to be roughly 5,000 years old.[4]

The latest pictures of N49 by the Chandra X-ray Observatory have revealed a bullet-shaped object traveling at about 5 million miles an hour away from a bright X-ray and gamma-ray point source, probably a neutron star with an extremely powerful magnetic field, known as a soft gamma repeater.[4] A particularly strong gamma-ray burst from LMC N49 was detected on March 5, 1979.[25]

References

1. ^10 11 {{cite simbad |title= SNR J052559-660453 }}
2. ^{{cite web |url= http://chandra.harvard.edu/photo/2010/n49/ |title=N49: Stellar Shrapnel Seen in Aftermath of Explosion |author=Chandra X-ray Observatory |date=2010-05-24 |accessdate=2015-10-15}}
3. ^{{cite web |url=http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/n49-is-a-supernova-remnant-that-spans-about-30-ly-in-the-lmc-a-newly-born-magnetar-a-highly-magnetized-spinning-neutron-star-is-left-over-in-the-ancient-stellar-explosion-which-created-supernova-r/ |title= N49, an asymmetric supernova remnant in the LMC |date=2012-08-30 |accessdate=2015-10-15}}
[1][2][3]
}}
  • Harvard-Smithsonian Center for Astrophysics, [https://www.cfa.harvard.edu/ssp/extreme_astrophysics/n49.html "N49: A supernova remnant in the Large Magellanic Cloud"]

3 : Dorado (constellation)|Large Magellanic Cloud|Supernova remnants

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/11/11 3:22:09