LOTIS search for early-time optical afterglows

GRB 971227

George G Williams, H. S. Park, E. Ables, D. L. Band, S. D. Barthelmy, R. Bionta, P. S. Butterworth, T. L. Cline, D. H. Ferguson, G. J. Fishman, N. Gehrels, D. H. Hartmann, K. Hurley, C. Kouveliotou, C. A. Meegan, L. Ott, E. Parker, R. Porrata

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report on the very early time search for an optical afterglow from GRB 971227 with the Livermore Optical Transient Imaging System (LOTIS). LOTIS began imaging the "original" BATSE error box of GRB 971227 ∼14 s after the onset of gamma-ray emission. Continuous monitoring of the position throughout the evening yielded a total of 499 images (10 s integration). Analysis of these images revealed no steady optical afterglow brighter than R = 12.3 ± 0.2 in any single image. Co-addition of the LOTIS images also failed to uncover transient optical emission. In particular, assuming a constant early-time flux, no optical afterglow brighter than R = 14.2 ± 0.2 was present within the first 1200 s, and no optical afterglow brighter than R= 15.0 ± 0.2 was present in the first 6.0 hr. Follow-up observations by other groups revealed a likely X-ray afterglow and a possible optical afterglow. Although subsequent deeper observations could not confirm a fading source, we show that these transients are not inconsistent with our present knowledge of the characteristics of gamma-ray burst afterglows. We also demonstrate that with the upgraded thermoelectrically cooled CCDs, LOTIS is capable of either detecting very early time optical afterglow or placing stringent constraints on the relationship between the gamma-ray emission and the longer wavelength afterglow in relativistic blast-wave models.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume519
Issue number1 PART 2
StatePublished - Jul 1 1999
Externally publishedYes

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afterglows
wavelength
gamma rays
evening
monitoring
blasts
fading
gamma ray bursts
light emission
boxes
charge coupled devices
wavelengths

Keywords

  • Gamma rays: bursts

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Williams, G. G., Park, H. S., Ables, E., Band, D. L., Barthelmy, S. D., Bionta, R., ... Porrata, R. (1999). LOTIS search for early-time optical afterglows: GRB 971227. Astrophysical Journal, 519(1 PART 2).

LOTIS search for early-time optical afterglows : GRB 971227. / Williams, George G; Park, H. S.; Ables, E.; Band, D. L.; Barthelmy, S. D.; Bionta, R.; Butterworth, P. S.; Cline, T. L.; Ferguson, D. H.; Fishman, G. J.; Gehrels, N.; Hartmann, D. H.; Hurley, K.; Kouveliotou, C.; Meegan, C. A.; Ott, L.; Parker, E.; Porrata, R.

In: Astrophysical Journal, Vol. 519, No. 1 PART 2, 01.07.1999.

Research output: Contribution to journalArticle

Williams, GG, Park, HS, Ables, E, Band, DL, Barthelmy, SD, Bionta, R, Butterworth, PS, Cline, TL, Ferguson, DH, Fishman, GJ, Gehrels, N, Hartmann, DH, Hurley, K, Kouveliotou, C, Meegan, CA, Ott, L, Parker, E & Porrata, R 1999, 'LOTIS search for early-time optical afterglows: GRB 971227', Astrophysical Journal, vol. 519, no. 1 PART 2.
Williams GG, Park HS, Ables E, Band DL, Barthelmy SD, Bionta R et al. LOTIS search for early-time optical afterglows: GRB 971227. Astrophysical Journal. 1999 Jul 1;519(1 PART 2).
Williams, George G ; Park, H. S. ; Ables, E. ; Band, D. L. ; Barthelmy, S. D. ; Bionta, R. ; Butterworth, P. S. ; Cline, T. L. ; Ferguson, D. H. ; Fishman, G. J. ; Gehrels, N. ; Hartmann, D. H. ; Hurley, K. ; Kouveliotou, C. ; Meegan, C. A. ; Ott, L. ; Parker, E. ; Porrata, R. / LOTIS search for early-time optical afterglows : GRB 971227. In: Astrophysical Journal. 1999 ; Vol. 519, No. 1 PART 2.
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AU - Park, H. S.

AU - Ables, E.

AU - Band, D. L.

AU - Barthelmy, S. D.

AU - Bionta, R.

AU - Butterworth, P. S.

AU - Cline, T. L.

AU - Ferguson, D. H.

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AU - Gehrels, N.

AU - Hartmann, D. H.

AU - Hurley, K.

AU - Kouveliotou, C.

AU - Meegan, C. A.

AU - Ott, L.

AU - Parker, E.

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