GRB 011211: Difference between revisions
Content deleted Content added
m →Supernova relation: clean up using AWB |
Rescuing 2 sources and tagging 0 as dead. #IABot (v1.2.7.1) |
||
| Line 11: | Line 11: | ||
== Supernova relation == |
== Supernova relation == |
||
A team of researchers at the [[University of Leicester]] conducted an analysis of the burst's X-ray afterglow with the [[XMM-Newton]] observatory. They found evidence for [[emission line]]s of magnesium, silicon, sulphur, and various other [[chemical element]]s. This was the first detection of these elements in the spectrum of a GRB.<ref>{{cite news |
A team of researchers at the [[University of Leicester]] conducted an analysis of the burst's X-ray afterglow with the [[XMM-Newton]] observatory. They found evidence for [[emission line]]s of magnesium, silicon, sulphur, and various other [[chemical element]]s. This was the first detection of these elements in the spectrum of a GRB.<ref>{{cite news|title=XMM observation of gamma ray burst shows supernova connection |url=http://www.star.le.ac.uk/news/0302.html |publisher=University of Leicester |author=Osborne, Julian |date=5 April 2002 |accessdate=31 May 2010 |deadurl=yes |archiveurl=https://web.archive.org/web/20090503063834/http://www.star.le.ac.uk:80/news/0302.html |archivedate=3 May 2009 |df= }}</ref> These observations provided strong evidence for a relation between gamma-ray bursts and [[supernova]].<ref name="Reeves">{{cite journal|doi=10.1038/416512a |title=The signature of supernova ejecta measured in the X-ray afterglow of the Gamma Ray Burst 011211 |author=Reeves, J. N. |display-authors=etal |journal=Nature |volume=416 |pages=512–515 |date=4 April 2002 |url=http://www.swift.ac.uk/Reeves_final_pages.pdf |arxiv=astro-ph/0204075 |bibcode=2002Natur.416..512R |issue=6880 |pmid=11932738 |deadurl=yes |archiveurl=https://web.archive.org/web/20110718072801/http://www.swift.ac.uk/Reeves_final_pages.pdf |archivedate=2011-07-18 |df= }}</ref> However, other astronomers pointed out flaws in the methodology of the Leicester research team, such as the [[data reduction]] methods,<ref>{{cite journal | doi = 10.1086/368102 | title = Observations of the X-Ray Afterglows of GRB 011211 and GRB 001025 by XMM-Newton |author1=Borozdin, Konstantin N. |author2=Trudolyubov, Sergey P. | journal = The Astrophysical Journal | volume = 583 | pages = L57–L61 | date = 1 February 2003 | url = http://iopscience.iop.org/1538-4357/583/2/L57/fulltext | bibcode=2003ApJ...583L..57B|arxiv = astro-ph/0205208 | issue=2}}</ref> the low [[statistical significance]] of the emission lines,<ref>{{cite journal | title = Statistical Re-examination of Reported Emission Lines in the X-ray Afterglow of GRB 011211 |author1=Rutledge, Robert E. |author2=Sako, Masao | journal = [[Monthly Notices of the Royal Astronomical Society]] | volume = 339 | issue = 3 | pages = 600–606 | date = 20 February 2003 | doi = 10.1046/j.1365-8711.2003.06051.x|arxiv = astro-ph/0206073 |bibcode = 2003MNRAS.339..600R }}</ref> and the low [[spectral resolution]] of the instrument used.<ref name="Butler">{{cite journal | doi = 10.1086/378511 | title = The X-ray Afterglows of GRB 020813 and GRB 021004 with CHANDRA HETGS: Possible Evidence for a Supernova Prior to GRB 020813 | author = Butler, Nathaniel R. | display-authors = etal | journal = The Astrophysical Journal | volume = 597 | pages = 1010–1016 | date = 10 November 2003 | url = http://iopscience.iop.org/0004-637X/597/2/1010/pdf/0004-637X_597_2_1010.pdf | bibcode=2003ApJ...597.1010B|arxiv = astro-ph/0303539 | issue=2}}</ref> Despite a follow-up paper from the Leicester team to address these concerns,<ref>{{cite journal | title = Soft X-ray emission lines in the afterglow spectrum of GRB 011211: A detailed XMM-Newton analysis | author = Reeves, J. N. | display-authors = etal | journal = Astronomy & Astrophysics | volume = 403 | issue = 2 | pages = 463–472 | date = 4 May 2003 | doi = 10.1051/0004-6361:20030204 | bibcode=2003A&A...403..463R|arxiv = astro-ph/0206480 }}</ref> the findings remained controversial, and [[GRB 020813]] was given the distinction of being the first burst with direct evidence of a supernova relation.<ref>{{cite press release | title = Cosmic Forensics Confirms Gamma-Ray Burst And Supernova Connection | publisher = NASA | date = 24 March 2003 | url = http://chandra.harvard.edu/press/03_releases/press_032403.html | accessdate = 23 May 2010}}</ref><ref>{{cite news | title = Supernova is 'smoking gun' in gamma-ray-burst whodunit | author = Fazekas, Andrew | url = http://www.astronomy.com/asy/default.aspx?c=a&id=2155 | date = 2 April 2003 | accessdate = 23 May 2010 | newspaper = Astronomy }}</ref> |
||
== Host galaxy == |
== Host galaxy == |
||
Revision as of 23:06, 6 January 2017
| Event type | Gamma-ray burst  |
|---|---|
| Constellation | Crater |
| Right ascension | 168h 49m 4.8s |
| Declination | −21° 55′ 44.4″[1] |
| Redshift | 2.14 ±0.01, 2.14 |
| Total energy output | 5×1052 ergs |
| Other designations | GRB 011211 |
GRB 011211 was a gamma-ray burst (GRB) detected on December 11, 2001. A gamma-ray burst is a highly luminous flash associated with an explosion in a distant galaxy and producing gamma rays, the most energetic form of electromagnetic radiation, and often followed by a longer-lived "afterglow" emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, and radio).
Observations
GRB 011211 was detected by the Italian–Dutch X-ray astronomy satellite BeppoSAX on 11 December 2001 at 19:09 UTC.[2] The burst lasted 270 seconds, making it the longest burst that had ever been detected by BeppoSAX up to that point.[3] A spectrum recorded by the Yepun telescope indicated a redshift of z = 2.14.[4]
Supernova relation
A team of researchers at the University of Leicester conducted an analysis of the burst's X-ray afterglow with the XMM-Newton observatory. They found evidence for emission lines of magnesium, silicon, sulphur, and various other chemical elements. This was the first detection of these elements in the spectrum of a GRB.[5] These observations provided strong evidence for a relation between gamma-ray bursts and supernova.[3] However, other astronomers pointed out flaws in the methodology of the Leicester research team, such as the data reduction methods,[6] the low statistical significance of the emission lines,[7] and the low spectral resolution of the instrument used.[8] Despite a follow-up paper from the Leicester team to address these concerns,[9] the findings remained controversial, and GRB 020813 was given the distinction of being the first burst with direct evidence of a supernova relation.[10][11]
Host galaxy
Optical, infrared, and X-ray observations taken by the Hubble Space Telescope between 14 and 59 days after the burst's detection revealed a blue galaxy with an apparent magnitude of 24.95 ± 0.11.[12] Like several other gamma-ray burst hosts, Lyman alpha emission was detected from this galaxy, supporting the theory that the progenitors of gamma-ray burst tend to be metal-poor.[13]
Notes
- ^ Gandolfi, Giangiacomo (12 December 2001). "GRB011211(=XRF011211): BeppoSAX refined positions". GCN Circulars. 1189.
- ^ Gandolfi, Giangiacomo (12 December 2001). "BeppoSAX Alert: GRB011211(=XRF011211)". GCN Circulars. 1188.
- ^ a b Reeves, J. N.; et al. (4 April 2002). "The signature of supernova ejecta measured in the X-ray afterglow of the Gamma Ray Burst 011211" (PDF). Nature. 416 (6880): 512–515. arXiv:astro-ph/0204075. Bibcode:2002Natur.416..512R. doi:10.1038/416512a. PMID 11932738. Archived from the original (PDF) on 2011-07-18.
{{cite journal}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ Fruchter, Andrew S. (13 December 2001). "GRB 011211: Optical Spectroscopy". GCN Circulars. 1200.
- ^ Osborne, Julian (5 April 2002). "XMM observation of gamma ray burst shows supernova connection". University of Leicester. Archived from the original on 3 May 2009. Retrieved 31 May 2010.
{{cite news}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ Borozdin, Konstantin N.; Trudolyubov, Sergey P. (1 February 2003). "Observations of the X-Ray Afterglows of GRB 011211 and GRB 001025 by XMM-Newton". The Astrophysical Journal. 583 (2): L57–L61. arXiv:astro-ph/0205208. Bibcode:2003ApJ...583L..57B. doi:10.1086/368102.
- ^ Rutledge, Robert E.; Sako, Masao (20 February 2003). "Statistical Re-examination of Reported Emission Lines in the X-ray Afterglow of GRB 011211". Monthly Notices of the Royal Astronomical Society. 339 (3): 600–606. arXiv:astro-ph/0206073. Bibcode:2003MNRAS.339..600R. doi:10.1046/j.1365-8711.2003.06051.x.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Butler, Nathaniel R.; et al. (10 November 2003). "The X-ray Afterglows of GRB 020813 and GRB 021004 with CHANDRA HETGS: Possible Evidence for a Supernova Prior to GRB 020813" (PDF). The Astrophysical Journal. 597 (2): 1010–1016. arXiv:astro-ph/0303539. Bibcode:2003ApJ...597.1010B. doi:10.1086/378511.
- ^ Reeves, J. N.; et al. (4 May 2003). "Soft X-ray emission lines in the afterglow spectrum of GRB 011211: A detailed XMM-Newton analysis". Astronomy & Astrophysics. 403 (2): 463–472. arXiv:astro-ph/0206480. Bibcode:2003A&A...403..463R. doi:10.1051/0004-6361:20030204.
- ^ "Cosmic Forensics Confirms Gamma-Ray Burst And Supernova Connection" (Press release). NASA. 24 March 2003. Retrieved 23 May 2010.
- ^ Fazekas, Andrew (2 April 2003). "Supernova is 'smoking gun' in gamma-ray-burst whodunit". Astronomy. Retrieved 23 May 2010.
- ^ Jakobsson, P.; et al. (10 July 2003). "The Afterglow and Host Galaxy of GRB 011211". Astronomy and Astrophysics. 408 (3): 941–947. arXiv:astro-ph/0307222. Bibcode:2003A&A...408..941J. doi:10.1051/0004-6361:20031044.
- ^ Fynbo, J. P. U.; et al. (19 June 2003). "On the Ly α emission from gamma-ray burst host galaxies: Evidence for low metallicities". Astronomy and Astrophysics. 406 (3): L63–L66. arXiv:astro-ph/0306403. Bibcode:2003A&A...406L..63F. doi:10.1051/0004-6361:20030931.