The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999

S. R. Kulkarni, S. G. Djorgovski, S. C. Odewahn, J. S. Bloom, R. R. Gal, C. D. Koresko, F. A. Harrison, L. M. Lubln, L. Armus, R. Sari, G. D. Illingworth, D. D. Kelson, D. K. Magee, P. G. Van Dokkum, D. A. Frail, J. S. Mulchaey, M. A. Malkan, I. S. McClean, H. I. Teplitz, David W Koerner & 9 others D. Kirkpatrick, N. Kobayashi, I. A. Yadigaroglu, J. Halpern, T. Piran, R. W. Goodrich, F. H. Chaffee, M. Feroci, E. Costa

Research output: Contribution to journalArticle

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Abstract

Long-lived emission, known as afterglow, has now been detected from about a dozen γ-ray bursts. Distance determinations place the bursts at cosmological distances, with redshifts, z, ranging from ~1 to 3. The energy required to produce these bright γ-ray flashes is enormous: up to ~1053 erg, or 10 per cent of the rest-mass energy of a neutron star, if the emission is isotropic. Here we present optical and near-infrared observations of the afterglow of GRB990123, and we determine a redshift of z ≥ 1.6. This is to date the brightest γ-ray burst with a well-localized position and if the γ-rays were emitted isotropically, the energy release exceeds the rest- mass energy of a neutron star, so challenging current theoretical models of the sources. We argue, however, that our data may provide evidence of beamed (rather than isotropic) radiation, thereby reducing the total energy released to a level where stellar-death models are still tenable.

Original languageEnglish (US)
Pages (from-to)389-394
Number of pages6
JournalNature
Volume398
Issue number6726
DOIs
StatePublished - Apr 1 1999
Externally publishedYes

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afterglows
bursts
rays
neutron stars
energy
death
flash
radiation

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Kulkarni, S. R., Djorgovski, S. G., Odewahn, S. C., Bloom, J. S., Gal, R. R., Koresko, C. D., ... Costa, E. (1999). The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999. Nature, 398(6726), 389-394. https://doi.org/10.1038/18821

The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999. / Kulkarni, S. R.; Djorgovski, S. G.; Odewahn, S. C.; Bloom, J. S.; Gal, R. R.; Koresko, C. D.; Harrison, F. A.; Lubln, L. M.; Armus, L.; Sari, R.; Illingworth, G. D.; Kelson, D. D.; Magee, D. K.; Van Dokkum, P. G.; Frail, D. A.; Mulchaey, J. S.; Malkan, M. A.; McClean, I. S.; Teplitz, H. I.; Koerner, David W; Kirkpatrick, D.; Kobayashi, N.; Yadigaroglu, I. A.; Halpern, J.; Piran, T.; Goodrich, R. W.; Chaffee, F. H.; Feroci, M.; Costa, E.

In: Nature, Vol. 398, No. 6726, 01.04.1999, p. 389-394.

Research output: Contribution to journalArticle

Kulkarni, SR, Djorgovski, SG, Odewahn, SC, Bloom, JS, Gal, RR, Koresko, CD, Harrison, FA, Lubln, LM, Armus, L, Sari, R, Illingworth, GD, Kelson, DD, Magee, DK, Van Dokkum, PG, Frail, DA, Mulchaey, JS, Malkan, MA, McClean, IS, Teplitz, HI, Koerner, DW, Kirkpatrick, D, Kobayashi, N, Yadigaroglu, IA, Halpern, J, Piran, T, Goodrich, RW, Chaffee, FH, Feroci, M & Costa, E 1999, 'The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999', Nature, vol. 398, no. 6726, pp. 389-394. https://doi.org/10.1038/18821
Kulkarni SR, Djorgovski SG, Odewahn SC, Bloom JS, Gal RR, Koresko CD et al. The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999. Nature. 1999 Apr 1;398(6726):389-394. https://doi.org/10.1038/18821
Kulkarni, S. R. ; Djorgovski, S. G. ; Odewahn, S. C. ; Bloom, J. S. ; Gal, R. R. ; Koresko, C. D. ; Harrison, F. A. ; Lubln, L. M. ; Armus, L. ; Sari, R. ; Illingworth, G. D. ; Kelson, D. D. ; Magee, D. K. ; Van Dokkum, P. G. ; Frail, D. A. ; Mulchaey, J. S. ; Malkan, M. A. ; McClean, I. S. ; Teplitz, H. I. ; Koerner, David W ; Kirkpatrick, D. ; Kobayashi, N. ; Yadigaroglu, I. A. ; Halpern, J. ; Piran, T. ; Goodrich, R. W. ; Chaffee, F. H. ; Feroci, M. ; Costa, E. / The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999. In: Nature. 1999 ; Vol. 398, No. 6726. pp. 389-394.
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AU - Gal, R. R.

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AU - Yadigaroglu, I. A.

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AU - Costa, E.

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