GRB 090429B: Difference between revisions
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'''GRB 090429B''' was a [[gamma-ray burst]] first detected on 29 April, 2009, by the [[Burst Alert Telescope]] aboard the [[Swift_Gamma-Ray_Burst_Mission|Swift satellite]]. The burst triggered a standard burst-response observation sequence, which started at 106 s after the burst. The X-ray telescope aboard the satellite identified an uncatalogued fading source. No optical or UV counterpart was seen in the UV–optical telescope. Around 2.5 hours after the burst trigger, a series of observations was carried out from [[Gemini North]], which detected a bright object in infrared spectrum. No evidence of a host galaxy was found either by Gemini North or by [[Hubble Space Telescope|HST]].<ref>{{cite journal|last1=Cucchiara|first1=A.|last2=Levan|first2=A. J.|last3=Fox|first3=D. B.|last4=Tanvir|first4=N. R.|last5=Ukwatta|first5=T. N.|last6=Berger|first6=E.|last7=Krühler|first7=T.|last8=Yoldaş|first8=A. Küpcü|last9=Wu|first9=X. F.|last10=Toma|first10=K.|last11=Greiner|first11=J.|last12=E. Olivares|first12=F.|last13=Rowlinson|first13=A.|last14=Amati|first14=L.|last15=Sakamoto|first15=T.|last16=Roth|first16=K.|last17=Stephens|first17=A.|last18=Fritz|first18=Alexander|last19=Fynbo|first19=J. P. U.|last20=Hjorth|first20=J.|last21=Malesani|first21=D.|last22=Jakobsson|first22=P.|last23=Wiersema|first23=K.|last24=O'Brien|first24=P. T.|last25=Soderberg|first25=A. M.|last26=Foley|first26=R. J.|last27=Fruchter|first27=A. S.|last28=Rhoads|first28=J.|last29=Rutledge|first29=R. E.|last30=Schmidt|first30=B. P.|last31=Dopita|first31=M. A.|last32=Podsiadlowski|first32=P.|last33=Willingale|first33=R.|last34=Wolf|first34=C.|last35=Kulkarni|first35=S. R.|last36=D’Avanzo|first36=P.|title=A PHOTOMETRIC REDSHIFT OF ∼ 9.4 FOR GRB 090429B|journal=The Astrophysical Journal|date=20 July 2011|volume=736|issue=1|pages=7|doi=10.1088/0004-637X/736/1/7}}</ref> Though this burst was detected in 2009, it was not until May 2011 that its distance estimate was announced. The burst had a [[photometric redshift]] of z=9.4,<ref name=cucchiara>http://adsabs.harvard.edu/abs/2011ApJ...736....7C</ref> which would make it the most distant GRB known,<ref name=SD-2011-05-27>Space Daily, [http://www.spacedaily.com/reports/Explosion_Helps_Researcher_Spot_Universe_Most_Distant_Object_999.html Explosion Helps Researcher Spot Universe's Most Distant Object], 27 May 2011</ref> although the error bar on this estimate was large, providing a lower limit of z>7.<ref name=cucchiara/> |
'''GRB 090429B''' was a [[gamma-ray burst]] first detected on 29 April, 2009, by the [[Burst Alert Telescope]] aboard the [[Swift_Gamma-Ray_Burst_Mission|Swift satellite]]. The burst triggered a standard burst-response observation sequence, which started at 106 s after the burst. The X-ray telescope aboard the satellite identified an uncatalogued fading source. No optical or UV counterpart was seen in the UV–optical telescope. Around 2.5 hours after the burst trigger, a series of observations was carried out from [[Gemini North]], which detected a bright object in infrared spectrum. No evidence of a host galaxy was found either by Gemini North or by [[Hubble Space Telescope|HST]].<ref>{{cite journal|last1=Cucchiara|first1=A.|last2=Levan|first2=A. J.|last3=Fox|first3=D. B.|last4=Tanvir|first4=N. R.|last5=Ukwatta|first5=T. N.|last6=Berger|first6=E.|last7=Krühler|first7=T.|last8=Yoldaş|first8=A. Küpcü|last9=Wu|first9=X. F.|last10=Toma|first10=K.|last11=Greiner|first11=J.|last12=E. Olivares|first12=F.|last13=Rowlinson|first13=A.|last14=Amati|first14=L.|last15=Sakamoto|first15=T.|last16=Roth|first16=K.|last17=Stephens|first17=A.|last18=Fritz|first18=Alexander|last19=Fynbo|first19=J. P. U.|last20=Hjorth|first20=J.|last21=Malesani|first21=D.|last22=Jakobsson|first22=P.|last23=Wiersema|first23=K.|last24=O'Brien|first24=P. T.|last25=Soderberg|first25=A. M.|last26=Foley|first26=R. J.|last27=Fruchter|first27=A. S.|last28=Rhoads|first28=J.|last29=Rutledge|first29=R. E.|last30=Schmidt|first30=B. P.|last31=Dopita|first31=M. A.|last32=Podsiadlowski|first32=P.|last33=Willingale|first33=R.|last34=Wolf|first34=C.|last35=Kulkarni|first35=S. R.|last36=D’Avanzo|first36=P.|title=A PHOTOMETRIC REDSHIFT OF ∼ 9.4 FOR GRB 090429B|journal=The Astrophysical Journal|date=20 July 2011|volume=736|issue=1|pages=7|doi=10.1088/0004-637X/736/1/7}}</ref> Though this burst was detected in 2009, it was not until May 2011 that its distance estimate was announced. The burst had a [[photometric redshift]] of z=9.4,<ref name=cucchiara>http://adsabs.harvard.edu/abs/2011ApJ...736....7C</ref> which would make it the most distant GRB known,<ref name=SD-2011-05-27>Space Daily, [http://www.spacedaily.com/reports/Explosion_Helps_Researcher_Spot_Universe_Most_Distant_Object_999.html Explosion Helps Researcher Spot Universe's Most Distant Object], 27 May 2011</ref> although the error bar on this estimate was large, providing a lower limit of z>7.<ref name=cucchiara/> |
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The amount of energy, released in the burst, was estimated as 3.5 × 10<sup>52</sup> erg. For a comparison, the [[Sun]]'s luminosity is 3.8 × 10<sup>33</sup> erg/s. |
The amount of energy, released in the burst, was estimated as 3.5 × 10<sup>52</sup> erg. For a comparison, the [[Sun]]'s luminosity is 3.8 × 10<sup>33</sup> erg/s. |
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On 2009 April 29, a five-second-long burst of [[gamma ray]]s from the constellation [[Canes Venatici]] triggered the Burst Alert Telescope on NASA's [[Swift Gamma-Ray Burst Mission|Swift satellite]]. |
On 2009 April 29, a five-second-long burst of [[gamma ray]]s from the constellation [[Canes Venatici]] triggered the Burst Alert Telescope on NASA's [[Swift Gamma-Ray Burst Mission|Swift satellite]]. |
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== See also == |
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[[GRB 090423]], the most distant object known with spectroscopic confirmation |
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==References== |
==References== |
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Revision as of 08:23, 30 December 2014
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 Artist’s impression of the gamma-ray burst | |
| Event type | Gamma-ray burst  |
|---|---|
| Duration | 5.5 seconds |
| Instrument | Swift |
| Constellation | Canes Venatici |
| Right ascension | 14h 02m 40.10s |
| Declination | +32° 10′ 14.6″ |
| Total energy output | 3.5 × 1052 erg |
GRB 090429B was a gamma-ray burst first detected on 29 April, 2009, by the Burst Alert Telescope aboard the Swift satellite. The burst triggered a standard burst-response observation sequence, which started at 106 s after the burst. The X-ray telescope aboard the satellite identified an uncatalogued fading source. No optical or UV counterpart was seen in the UV–optical telescope. Around 2.5 hours after the burst trigger, a series of observations was carried out from Gemini North, which detected a bright object in infrared spectrum. No evidence of a host galaxy was found either by Gemini North or by HST.[1] Though this burst was detected in 2009, it was not until May 2011 that its distance estimate was announced. The burst had a photometric redshift of z=9.4,[2] which would make it the most distant GRB known,[3] although the error bar on this estimate was large, providing a lower limit of z>7.[2]
The amount of energy, released in the burst, was estimated as 3.5 × 1052 erg. For a comparison, the Sun's luminosity is 3.8 × 1033 erg/s.
On 2009 April 29, a five-second-long burst of gamma rays from the constellation Canes Venatici triggered the Burst Alert Telescope on NASA's Swift satellite.
See also
GRB 090423, the most distant object known with spectroscopic confirmation
References
- ^ Cucchiara, A.; Levan, A. J.; Fox, D. B.; Tanvir, N. R.; Ukwatta, T. N.; Berger, E.; Krühler, T.; Yoldaş, A. Küpcü; Wu, X. F.; Toma, K.; Greiner, J.; E. Olivares, F.; Rowlinson, A.; Amati, L.; Sakamoto, T.; Roth, K.; Stephens, A.; Fritz, Alexander; Fynbo, J. P. U.; Hjorth, J.; Malesani, D.; Jakobsson, P.; Wiersema, K.; O'Brien, P. T.; Soderberg, A. M.; Foley, R. J.; Fruchter, A. S.; Rhoads, J.; Rutledge, R. E.; Schmidt, B. P.; Dopita, M. A.; Podsiadlowski, P.; Willingale, R.; Wolf, C.; Kulkarni, S. R.; D’Avanzo, P. (20 July 2011). "A PHOTOMETRIC REDSHIFT OF ∼ 9.4 FOR GRB 090429B". The Astrophysical Journal. 736 (1): 7. doi:10.1088/0004-637X/736/1/7.
- ^ a b http://adsabs.harvard.edu/abs/2011ApJ...736....7C
- ^ Space Daily, Explosion Helps Researcher Spot Universe's Most Distant Object, 27 May 2011
This article incorporates public domain material from NASA's Swift Finds Most Distant Gamma-ray Burst Yet. National Aeronautics and Space Administration.
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