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SN 2003fg - 版本历史
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imported>KeplerSN：修饰语句 内容扩充
2025-03-19T04:03:46Z
<p>修饰语句 内容扩充</p>
<p><b>新页面</b></p><div>{{copyedit|time=2017-08-17T00:23:26+00:00}}<br />
{{Sky|14|16|18|+|52|14|00|7200}}<br />
{{Supernova <br />
| name = SN 2003fg<br />
| image = <br />
| caption = <br />
| epoch = [[J2000.0]]<br />
| type = 脫離常規的Ia<br />
| SNRtype = <br />
| host = <br />
| constellation = <br />
| ra = 14<sup>h</sup> 16<sup>m</sup> 18.78<sup>s</sup><br />
| dec =+52° 14' 55.4''<br />
| gal = 096.3812 +60.2821<br />
| discovery = 2003 <br />
| iauc = <br />
| mag_v = <br />
| distance = <br />
| notes = 超[[錢德拉塞卡極限|錢德拉塞卡]]<br />
}}<br />
<br />
'''SN 2003fg'''，有時也稱為"香檳酒超新星"，是一顆不尋常的[[Ia超新星]]。它是在2003年被位於[[夏威夷]][[毛納基山]]的[[加法夏望遠鏡]]和[[凱克望遠鏡]]發現的，並由加拿大[[多倫多大學]]的研究人員宣布此一發現<ref name="journal-nature-2" />。這顆超新星出現在距離地球40億光年遠的星系，它的暱稱來自1996年一首歌曲"[[香檳酒超新星]]"，是英國[[綠洲樂隊]]的一首[[搖滾樂]]<ref name="journal-nature" />。<br />
<br />
它的不尋常是因為其祖先的質量。依據當時的理解，當[[白矮星]]的質量接近1.4倍[[太陽質量]]的[[錢德拉塞卡極限]]時，就會爆炸成為[[Ia超新星]]。這個白矮星增长的質量來自其伴星，可能的演化过程包括[[恆星風]]，[[洛希瓣]]溢流<ref name="lbnl" />，或双白矮星合并事件<ref>{{Citation|title=Type Ia supernova progenitors: a contemporary view of a long-standing puzzle|url=https://arxiv.org/abs/2412.01766|date=2024-12-02|accessdate=2025-03-19|doi=10.48550/arXiv.2412.01766|first=Ashley J.|last=Ruiter|first2=Ivo R.|last2=Seitenzahl}}</ref>。<br />
<br />
然而，SN 2003fg的前身星在爆炸之前的質量達到2倍[[太陽質量]]。一个被用来解释一顆白矮星如何超过錢德拉塞卡極限的機制是白矮星的高速自转提供的离心力有效的提高了臨界質量。另一種解釋是，爆炸是由兩顆白矮星合併造成。前身星超钱德拉塞卡質量的證據來自超新星的光譜和[[光變曲線]] －特別虽然它有相对普通Ia超新星过高的亮度，但通过光譜测量到的動能比通常情况的更小。一種解釋是，更多的動能被耗费在從比平常深的重力阱逃逸出來的过程中<ref name="newscientist" />。<br />
<br />
這是很重要的，因為[[Ia超新星]]被認為有一致的亮度，使它們可以成為測量宇宙距離的[[標準燭光]]。異常類型的Ia超新星会导致测距中产生系统性误差影响其他工作；然而，SN 2003fg的光度曲線特徵使它永遠不會被误认为普通的高紅移Ia超新星。<br />
<br />
== 參考資料 ==<br />
{{Reflist |refs= <br />
<br />
<ref name="journal-nature-2">{{cite journal<br />
| last = Howell<br />
| first = D. Andrew<br />
| date = 21 September 2006<br />
| title = The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star<br />
| journal = [[Nature (journal)|Nature]]<br />
| volume = 443<br />
| pages = 308–311<br />
| doi = 10.1038/nature05103<br />
| arxiv = astro-ph/0609616<br />
| url = http://www.nature.com/nature/journal/v443/n7109/full/nature05103.html<br />
| accessdate = 9 August 2011<br />
| issue = 7109<br />
| bibcode = 2006Natur.443..308H<br />
| pmid = 16988705<br />
| archive-date = 2011-04-05<br />
| archive-url = https://web.archive.org/web/20110405124527/http://www.nature.com/nature/journal/v443/n7109/full/nature05103.html<br />
| dead-url = no<br />
}}</ref><br />
<br />
<ref name="journal-nature">{{cite journal<br />
|last = Branch<br />
|first = David<br />
|date = 21 September 2006<br />
|title = Astronomy: Champagne supernova<br />
|journal = [[Nature (journal)|Nature]]<br />
|volume = 443<br />
|pages = 283–284<br />
|doi = 10.1038/443283a<br />
|url = http://www.nature.com/nature/journal/v443/n7109/full/443283a.html<br />
|accessdate = 1 October 2010<br />
|bibcode = 2006Natur.443..283B<br />
|issue = 7109<br />
|archive-date = 2009-06-07<br />
|archive-url = https://web.archive.org/web/20090607072732/http://www.nature.com/nature/journal/v443/n7109/full/443283a.html<br />
|dead-url = no<br />
}}</ref><br />
<br />
<ref name="lbnl">{{cite news<br />
| title = The Weirdest Type Ia Supernova Yet<br />
| first = Peter<br />
| last = Nugent<br />
| url = http://www.lbl.gov/Science-Articles/Archive/Phys-weird-supernova.html<br />
| newspaper = Research News<br />
| date = September 20, 2006<br />
| accessdate = 2006-11-02<br />
| archive-date = 2017-10-08<br />
| archive-url = https://web.archive.org/web/20171008095627/http://www2.lbl.gov/Science-Articles/Archive/Phys-weird-supernova.html<br />
| dead-url = no<br />
}}</ref><br />
<br />
<ref name="newscientist">{{cite journal<br />
| last = McKee<br />
| first = Maggie<br />
| date = 20 September 2006<br />
| title = Bizarre supernova breaks all the rules<br />
| journal = [[New Scientist]]<br />
| url = http://www.newscientist.com/article/dn10114<br />
| accessdate = 2007-01-08<br />
| archive-date = 2015-06-21<br />
| archive-url = https://web.archive.org/web/20150621210939/http://www.newscientist.com/article/dn10114<br />
| dead-url = no<br />
}}</ref><br />
<br />
}}<br />
<br />
== 外部連結 ==<br />
* [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=SN+2003fg&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id SN 2003fg - SIMBAD]{{Wayback|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=SN+2003fg&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |date=20150621210913 }}<br />
*[http://www.news.utoronto.ca/bin6/060920-2575.asp 'Champagne supernova' challenges understanding of how supernovae work - University of Toronto]{{Wayback|url=http://www.news.utoronto.ca/bin6/060920-2575.asp |date=20080510034742 }}<br />
*[https://web.archive.org/web/20061025161153/http://www.cosmosmagazine.com/node/680 Cosmos Magazine - ''"Rebellious supernova confronts dark energy"'']<br />
*[http://www.cbc.ca/technology/story/2006/09/21/supernova.html 'Champagne Supernova' breaks astronomical rules - CBC]{{Wayback|url=http://www.cbc.ca/technology/story/2006/09/21/supernova.html |date=20100503120437 }}<br />
*[http://www.nature.com/nature/journal/v443/n7109/full/443283a.html;jsessionid=CA9FBC89DDC31324D3CCFD44B72BC7C7 Astronomy: Champagne supernova - ''Nature'']{{Wayback|url=http://www.nature.com/nature/journal/v443/n7109/full/443283a.html;jsessionid=CA9FBC89DDC31324D3CCFD44B72BC7C7 |date=20110524154112 }} (subscription site)<br />
*[http://imagine.gsfc.nasa.gov/docs/science/know_l2/supernovae.html Supernovae - NASA GSFC]{{Wayback|url=http://imagine.gsfc.nasa.gov/docs/science/know_l2/supernovae.html |date=20141030010746 }}<br />
<br />
{{超新星}}<br />
<br />
[[Category:超新星]]<br />
[[Category:2003年發現的天體]]</div>
imported>KeplerSN