GRB 030329

GRB 030329 was one of three gamma-ray bursts detected on 29 March 2003. The other two were labeled GRB 030329a{{cite journal | title = GRB030329a: detection by Konus-Wind | author = Frederiks, Dmitry | journal = GCN Circulars | volume = 2026 | date = 30 March 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/2026.gcn3 |page=1| bibcode = 2003GCN..2026....1G }} and GRB 030329b.{{cite journal | title = GRB030329b: detection by Konus-Wind and Helicon-CoronasF | author = Frederiks, Dmitry | journal = GCN Circulars | volume = 2025 | date = 30 March 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/2025.gcn3 |page=1| bibcode = 2003GCN..2025....1G }} GRB 030329 was detected by multiple instruments onboard HETE at 11:37 UTC and lasted approximately 25 seconds.{{cite journal | title = GRB030329 (=H2652): A Long, Extremely Bright GRB Localized by the HETE WXM and SXC | author = Lamb, Don | journal = GCN Circulars | volume = 1997 | date = 29 March 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/1997.gcn3 |page=1| bibcode =2003GCN..1997....1V}} The burst's optical afterglow was first observed from Siding Spring Observatory less than two hours after the burst had been detected.{{cite journal | title = GRB 030329: Optical afterglow candidate | author = Price, Paul | journal = GCN Circulars | volume = 1985 | date = 29 March 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/1985.gcn3 |page=1| bibcode =2003GCN..1985....1P }} The X-ray afterglow was first detected by RXTE approximately five hours after the burst.{{cite journal | title = RXTE detection of GRB 030329 afterglow | author = Marshall, Frank | journal = GCN Circulars | volume = 1996 | date = 29 March 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/1996.gcn3 |page=1| bibcode =2003GCN..1996....1M }} The radio afterglow was first detected by the Very Large Array and, at the time of its discovery, was the brightest radio afterglow ever observed.{{cite journal | title = GRB 030329: Radio Observations | author = Berger, Edo | journal = GCN Circulars | volume = 2014 | date = 30 March 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/2014.gcn3 |page=1| bibcode =2003GCN..2014....1B }} The burst was located at a sky position of R.A. = {{RA|10|44|49.95957}}, Dec. = {{DEC|+21|31|17.4375}} and had a redshift of z = 0.1685, corresponding to a distance of 587 Mpc.{{cite journal | title = Stirring the Embers: High-Sensitivity VLBI Observations of GRB 030329 | last1 = Pihlström | first1 = Y. L. | last2 = Taylor | first2 = G. B. | last3 = Granot | first3 = J. | last4 = Doeleman | first4 = S. | journal = Astrophysical Journal | volume = 664 | issue = 1 | pages = 411 | doi = 10.1086/518955 | date = 20 July 2007 | bibcode=2007ApJ...664..411P|arxiv = 0704.2085 | s2cid = 18115660 }}

GRB 030329's proximity to Earth enabled its afterglow to be studied in great detail. A spectrum taken of the burst's optical afterglow on 6 April 2003 showed peaks at approximately 570 nm and 470 nm. This spectrum was reproduced by combining a power-law distribution with the spectrum from SN 1998bw.{{cite journal | title = GRB 030329: Supernova Spectrum Emerging | author = Stanek, Krzysztof Z. | journal = GCN Circulars | volume = 2107 | date = 7 April 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/2107.gcn3 |page=1| bibcode =2003GCN..2107....1M}} These supernova-like features continued to develop in the weeks after the initial burst.{{cite journal | title = GRB 030329: Supernova Confirmed | author = Stanek, Krzysztof Z. | journal = GCN Circulars | volume = 2120 | date = 8 April 2003 | url =http://gcn.gsfc.nasa.gov/gcn3/2120.gcn3 |page=1| bibcode =2003GCN..2120....1M}} Optical observations taken at Kitt Peak National Observatory on indicated that the burst's optical afterglow was brighter than a power-law decay would have predicted, a deviation that could have been explained by additional light from a supernova.{{cite journal | title = GRB 030329: SARA Optical Observations | author = Lindsay, Kevin | journal = GCN Circulars | volume = 2143 | date = 16 April 2003 | url = http://gcn.gsfc.nasa.gov/gcn3/2143.gcn3 |page=1| bibcode = 2003GCN..2143....1L}} On 10 April 2003, NASA announced that GRB 030329 had provided the definitive link between gamma-ray bursts and supernovae.{{cite press release | title = It's a Supernova! | publisher = NASA Science News | date = 10 April 2003 | url = https://science.nasa.gov/science-news/science-at-nasa/2003/10apr_grb/ | access-date = 12 July 2017 | archive-date = 19 December 2019 | archive-url = https://web.archive.org/web/20191219212019/https://science.nasa.gov/science-news/science-at-nasa/2003/10apr_grb/ | url-status = dead }} The supernova was later referred to as SN 2003dh.{{cite journal | title = Spectroscopic Discovery of the Supernova 2003dh Associated with GRB0303291 | first9 = R. | last10 = Krisciunas | first10 = K. | last11 = Calkins | first11 = M. L. | last12 = Lee | first12 = J. C. | last13 = Hathi | first13 = N. | last14 = Jansen | first14 = R. A. | last15 = Windhorst | first15 = R. | last16 = Echevarria | first16 = L. | last17 = Eisenstein | first17 = D. J. | last18 = Pindor | first18 = B. | last19 = Olszewski | first19 = E. W. | last20 = Harding | first20 = P. | last21 = Holland | first21 = S. T. | last22 = Bersier | first22 = D. | last9 = Schild | first8 = W. R. | last8 = Brown | first7 = P. | last7 = Challis | first6 = N. | last6 = Caldwell | first5 = P. | last5 = Berlind | first4 = P. | last4 = Martini | first3 = P. M. | last3 = Garnavich | first2 = T. | last2 = Matheson | author = Stanek, Krzysztof Z. | journal = Astrophysical Journal | volume = 591 | pages = L17–L20 | doi = 10.1086/376976 | date = 12 June 2003 | issue = 1 | bibcode=2003ApJ...591L..17S|arxiv = astro-ph/0304173 | s2cid = 2561943 }}

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Category:March 2003

Category:Leo (constellation)