Abstract
γ-ray bursts (GRBs) have puzzled astronomers for almost three decades, primarily owing to the lack of identifications at other wavelengths. The detection of a radio counterpart1 enables application of the powerful technique of very long baseline interferometry (VLBI) to this intriguing class of objects. Here we present VLBI monitoring of VLA J065349.4 + 791619 obtained between 8 and 25 days after the initial γ-ray burst. The radio emission is found to be very compact, with an angular extent of less than 1 milliarcsecond. We derive a position for the radio counterpart accurate to 200 microarcseconds, and constrain the proper motion of VLA J065349.4 + 791619 be less than 50 milliarcseconds per year. We place an upper limit on the annual parallax of 1 milliarcsecond. These results are entirely consistent with the expectations of cosmological models.
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References
Frail, D. A., Kulkarni, S. R., Nicastro, L., Feroci, M. & Taylor, G. B. The radio afterglow from the γ-ray burst of 8 May 1997. Nature 389 261–263 (1997).
Johnston, K. J. et al. Aradio reference frame. Astron. J. 110, 880–915 (1995).
Windhorst, R. A., Fomalont, E. B., Partridge, R. B. & Lowenthal, J. D. Microjansky source counts and spectral indices at 8.44 GHz. Astrophys. J. 405, 498–517 (1993).
Giovannini, G., Feretti, L. & Comoretto, C. VLBI observations of a complete sample of radio galaxies. I. Snapshot data. Astrophys. J. 358, 159–163 (1990).
Lara, L. et al. VLBI observations of a complete sample of radio galaxies. VII. Study of the FR I Sources 3C 31, 4C 35.03 and 3C 264. Astrophys. J. 474, 179–187 (1997).
Taylor, G. B., Readhead, A. C. S. & Pearson, T. J. Pinpointing the center of activity in compact symmetric objects. I. Sources from the Pearson-Readhead survey. Astrophys. J. 463, 95–104 (1996).
O'Dea, C. P., Stanghellini, C., Baum, S. A. & Charlot, S. On the host galaxies of the gigahertz peaked-spectrum radio sources. Astrophys. J. 470, 806–813 (1996).
Campbell, R. M., Lehar, J., Corey, B. E., Shapiro, I. I. & Falco, E. E. VLBI observations of the gravitational lens system 0957 + 561. Astron. J. 110, 2566–2569 (1995).
Porcas, R. W. in Radio Emission from Galactic and Extragalactic Compact Sources(eds Zensus, J. A., Wrobel, J. M. & Taylor, G. B.) (IAU Colloq. 164, Astron. Soc. Pacific, San Francisco, in the press).
Wagner, S. J. & Witzel, A. Intraday variability in quasars and BL Lacs objects. Annu. Rev. Astron. Astrophys. 33, 163–197 (1995).
Pian, E. et al. Hubble space telescope imaging of the optical transient associated with GRB970508. Astrophys. J. (submitted).
Sari, R. Hydrodynamics of GRB afterglow. Preprint astro-ph/9706078(1997).
Marcaide, M. et al. Expansion of SN 1993J. Science 270, 1475–1478 (1995).
Beasley, A. J. & Conway, J. E. in Very Long Baseline interferometry and the VLBA(eds Zensus, J. A., Diamond, P. J.&Napier, P. J.) 327–341 (ASP Conf. Ser. Vol. 82, Astron. Soc. Pacific, San Francisco, (1995).
Acknowledgements
The VLA and VLBA are facilities of the NSF operated under cooperative agreement by Associated Universities, Inc. We thank the VLBA, VLA and Effelsberg operational staff, and the VLBA correlator staff, for their extraordinary efforts on behalf of this project. S.R.K. is supported by the NSF and NASA.
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Taylor, G., Frail, D., Beasley, A. et al. Position and parallax of the γ-ray burst of 8 May 1997. Nature 389, 263–265 (1997). https://doi.org/10.1038/38456
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DOI: https://doi.org/10.1038/38456
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