The X-ray, optical, and infrared counterpart to GRB 980703

P. M. Vreeswijk; T. J. Galama; A. Owens; T. Oosterbroek; T. R. Geballe; J. Van Paradijs; P. J. Groot; C. Kouveliotou; T. Koshut; N. Tanvir; R. A.M.J. Wijers; E. Pian; E. Palazzi; F. Frontera; N. Masetti; C. Robinson; M. Briggs; J. J.M. In 'T Zand; J. Heise; L. Piro; E. Costa; M. Feroci; L. A. Antonelli; K. Hurley; J. Greiner; D. A. Smith; A. M. Levine; Y. Lipkin; E. Leibowitz; C. Lidman; A. Pizzella; H. Böhnhardt; V. Doublier; S. Chaty; I. Smail; A. Blain; J. H. Hough; S. Young; N. Suntzeff

doi:10.1086/307740

The X-ray, optical, and infrared counterpart to GRB 980703

P. M. Vreeswijk
, T. J. Galama
, A. Owens
, T. Oosterbroek
, T. R. Geballe
, J. Van Paradijs
, P. J. Groot
, C. Kouveliotou
, T. Koshut
, N. Tanvir
, R. A.M.J. Wijers
, E. Pian
, E. Palazzi
, F. Frontera
, N. Masetti
, C. Robinson
, M. Briggs
, J. J.M. In 'T Zand
, J. Heise
, L. Piro

E. Costa, M. Feroci, L. A. Antonelli, K. Hurley, J. Greiner, D. A. Smith, A. M. Levine, Y. Lipkin, E. Leibowitz, C. Lidman, A. Pizzella, H. Böhnhardt, V. Doublier, S. Chaty, I. Smail, A. Blain, J. H. Hough, S. Young, N. Suntzeff

University of Amsterdam
Center for High-Energy Astrophysics
ESTEC - European Space Research and Technology Centre
University of Hawaii
University of Alabama in Huntsville
Universities Space Research Association
NASA Marshall Space Flight Center
Institute of Astronomy
Astronomy Program
Stony Brook University
Istituto di Tecnologie e Studio Delle Radiazioni Extraterrestri
Ev-K2-CNR Committee
Dipartimento di Fisica
University of Ferrara
SRON - Netherlands Institute for Space Research
University of California, Space Sciences Laboratory
Astrophysikalisches Institut Potsdam
Massachusetts Institute of Technology
Tel Aviv University
European Southern Observatory Santiago
Institut Pierre Simon Laplace, CNRS and CEA
IRAP/CNRS
Durham University
University of Cambridge
Physics and Astronomy
University of Hertfordshire
National Optical Astronomy Observatory

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

Abstract

We report on X-ray, optical, and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power-law decline, we find for its decay index α < -0.91 (3 σ). We invoke host-galaxy extinction to match the observed spectral slope with the slope expected from "fireball" models. We find no evidence for a spectral break in the infrared to X-ray spectral range on 1998 July 4.4, and determine a lower limit of the cooling break frequency, v_c > 1.3 × 10¹⁷ Hz. For this epoch we obtain an extinction of A_V = 1.50 ± 0.11. From the X-ray data we estimate the optical extinction to be A_V = 20.2_-7.3^+12.3, inconsistent with the former value. Our optical spectra confirm the redshift of z = 0.966. We compare the afterglow of GRB 980703 with that of GRB 970508 and find that the fraction of the energy in the magnetic field, ∈_B < 6 × 10^-5, is much lower in the case of GRB 980703, as a consequence of the high frequency of the cooling break.

Original language	English
Pages (from-to)	171-176
Number of pages	6
Journal	Astrophysical Journal
Volume	523
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/307740
Publication status	Published - 20 Sept 1999
Externally published	Yes

Keywords

Gamma rays: bursts
Infrared: galaxies
Radiation mechanisms: nonthermal
X-rays: galaxies

Access to Document

10.1086/307740

Cite this

Vreeswijk, P. M., Galama, T. J., Owens, A., Oosterbroek, T., Geballe, T. R., Van Paradijs, J., Groot, P. J., Kouveliotou, C., Koshut, T., Tanvir, N., Wijers, R. A. M. J., Pian, E., Palazzi, E., Frontera, F., Masetti, N., Robinson, C., Briggs, M., In 'T Zand, J. J. M., Heise, J., ... Suntzeff, N. (1999). The X-ray, optical, and infrared counterpart to GRB 980703. Astrophysical Journal, 523(1 PART 1), 171-176. https://doi.org/10.1086/307740

@article{e757f4b6573b4c27a9fbbdce4a547cae,

title = "The X-ray, optical, and infrared counterpart to GRB 980703",

abstract = "We report on X-ray, optical, and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power-law decline, we find for its decay index α < -0.91 (3 σ). We invoke host-galaxy extinction to match the observed spectral slope with the slope expected from {"}fireball{"} models. We find no evidence for a spectral break in the infrared to X-ray spectral range on 1998 July 4.4, and determine a lower limit of the cooling break frequency, vc > 1.3 {\texttimes} 1017 Hz. For this epoch we obtain an extinction of AV = 1.50 ± 0.11. From the X-ray data we estimate the optical extinction to be AV = 20.2-7.3+12.3, inconsistent with the former value. Our optical spectra confirm the redshift of z = 0.966. We compare the afterglow of GRB 980703 with that of GRB 970508 and find that the fraction of the energy in the magnetic field, ∈B < 6 {\texttimes} 10-5, is much lower in the case of GRB 980703, as a consequence of the high frequency of the cooling break.",

keywords = "Gamma rays: bursts, Infrared: galaxies, Radiation mechanisms: nonthermal, X-rays: galaxies",

author = "Vreeswijk, \{P. M.\} and Galama, \{T. J.\} and A. Owens and T. Oosterbroek and Geballe, \{T. R.\} and \{Van Paradijs\}, J. and Groot, \{P. J.\} and C. Kouveliotou and T. Koshut and N. Tanvir and Wijers, \{R. A.M.J.\} and E. Pian and E. Palazzi and F. Frontera and N. Masetti and C. Robinson and M. Briggs and \{In 'T Zand\}, \{J. J.M.\} and J. Heise and L. Piro and E. Costa and M. Feroci and Antonelli, \{L. A.\} and K. Hurley and J. Greiner and Smith, \{D. A.\} and Levine, \{A. M.\} and Y. Lipkin and E. Leibowitz and C. Lidman and A. Pizzella and H. B{\"o}hnhardt and V. Doublier and S. Chaty and I. Smail and A. Blain and Hough, \{J. H.\} and S. Young and N. Suntzeff",

year = "1999",

month = sep,

day = "20",

doi = "10.1086/307740",

language = "English",

volume = "523",

pages = "171--176",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 PART 1",

}

Vreeswijk, PM, Galama, TJ, Owens, A, Oosterbroek, T, Geballe, TR, Van Paradijs, J, Groot, PJ, Kouveliotou, C, Koshut, T, Tanvir, N, Wijers, RAMJ, Pian, E, Palazzi, E, Frontera, F, Masetti, N, Robinson, C, Briggs, M, In 'T Zand, JJM, Heise, J, Piro, L, Costa, E, Feroci, M, Antonelli, LA, Hurley, K, Greiner, J, Smith, DA, Levine, AM, Lipkin, Y, Leibowitz, E, Lidman, C, Pizzella, A, Böhnhardt, H, Doublier, V, Chaty, S, Smail, I, Blain, A, Hough, JH, Young, S & Suntzeff, N 1999, 'The X-ray, optical, and infrared counterpart to GRB 980703', Astrophysical Journal, vol. 523, no. 1 PART 1, pp. 171-176. https://doi.org/10.1086/307740

TY - JOUR

T1 - The X-ray, optical, and infrared counterpart to GRB 980703

AU - Vreeswijk, P. M.

AU - Galama, T. J.

AU - Owens, A.

AU - Oosterbroek, T.

AU - Geballe, T. R.

AU - Van Paradijs, J.

AU - Groot, P. J.

AU - Kouveliotou, C.

AU - Koshut, T.

AU - Tanvir, N.

AU - Wijers, R. A.M.J.

AU - Pian, E.

AU - Palazzi, E.

AU - Frontera, F.

AU - Masetti, N.

AU - Robinson, C.

AU - Briggs, M.

AU - In 'T Zand, J. J.M.

AU - Heise, J.

AU - Piro, L.

AU - Costa, E.

AU - Feroci, M.

AU - Antonelli, L. A.

AU - Hurley, K.

AU - Greiner, J.

AU - Smith, D. A.

AU - Levine, A. M.

AU - Lipkin, Y.

AU - Leibowitz, E.

AU - Lidman, C.

AU - Pizzella, A.

AU - Böhnhardt, H.

AU - Doublier, V.

AU - Chaty, S.

AU - Smail, I.

AU - Blain, A.

AU - Hough, J. H.

AU - Young, S.

AU - Suntzeff, N.

PY - 1999/9/20

Y1 - 1999/9/20

N2 - We report on X-ray, optical, and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power-law decline, we find for its decay index α < -0.91 (3 σ). We invoke host-galaxy extinction to match the observed spectral slope with the slope expected from "fireball" models. We find no evidence for a spectral break in the infrared to X-ray spectral range on 1998 July 4.4, and determine a lower limit of the cooling break frequency, vc > 1.3 × 1017 Hz. For this epoch we obtain an extinction of AV = 1.50 ± 0.11. From the X-ray data we estimate the optical extinction to be AV = 20.2-7.3+12.3, inconsistent with the former value. Our optical spectra confirm the redshift of z = 0.966. We compare the afterglow of GRB 980703 with that of GRB 970508 and find that the fraction of the energy in the magnetic field, ∈B < 6 × 10-5, is much lower in the case of GRB 980703, as a consequence of the high frequency of the cooling break.

AB - We report on X-ray, optical, and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power-law decline, we find for its decay index α < -0.91 (3 σ). We invoke host-galaxy extinction to match the observed spectral slope with the slope expected from "fireball" models. We find no evidence for a spectral break in the infrared to X-ray spectral range on 1998 July 4.4, and determine a lower limit of the cooling break frequency, vc > 1.3 × 1017 Hz. For this epoch we obtain an extinction of AV = 1.50 ± 0.11. From the X-ray data we estimate the optical extinction to be AV = 20.2-7.3+12.3, inconsistent with the former value. Our optical spectra confirm the redshift of z = 0.966. We compare the afterglow of GRB 980703 with that of GRB 970508 and find that the fraction of the energy in the magnetic field, ∈B < 6 × 10-5, is much lower in the case of GRB 980703, as a consequence of the high frequency of the cooling break.

KW - Gamma rays: bursts

KW - Infrared: galaxies

KW - Radiation mechanisms: nonthermal

KW - X-rays: galaxies

U2 - 10.1086/307740

DO - 10.1086/307740

M3 - Article

AN - SCOPUS:0040475591

SN - 0004-637X

VL - 523

SP - 171

EP - 176

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 1

ER -

The X-ray, optical, and infrared counterpart to GRB 980703

Abstract

Keywords

Access to Document

Fingerprint

Cite this