E. Gawiser
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
E. Gawiser has a total of 11 co-authors. Here are the top co-authors by number of shared publications:
C. Foltz
Multiple Mirror Telescope Observatory University of Arizona 933 North Cherry Avenue Tucson AZ
1 shared publication- David Bersier
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD
1 shared publication - Emilio E. Falco
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
1 shared publication - Francisco Javier Castander
Institut d’Estudis Espacials de Catalunya (IEEC)
1 shared publication - George G. Williams
MMT Observatory, P.O. Box 210065, University of Arizona, Tucson, AZ 85721-0065, USA
1 shared publication - Krzysztof Zbigniew Stanek
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138
1 shared publication
Latest Publications
- Open Access
The Spectroscopic Variability of GRB 021004
We present spectra of the optical transient (OT) associated with GRB 021004. The spectra show a blue continuum with superposed absorption features and one emission line. We confirm two intervening metal-line systems at z = 1.380 and z = 1.602 and one very strong absorption system at a redshift of z = 2.323. Ly_alpha emission is also seen at this redshift. While the spectrum of the OT overall cannot be simply described with a power law, the spectral index over the range 5500-8850 A is steep, F_nu ~ nu^(-0.96 +/- 0.03). Comparison of spectra from multiple epochs shows a distinct color evolution with the OT becoming redder with time over the first three days. This is the first clear example of color change in an OT detected spectroscopically.
Open AccessThe Spectroscopic Variability of GRB 021004
We present spectra of the optical transient (OT) associated with GRB 021004. The spectra show a blue continuum with superposed absorption features and one emission line. We confirm two intervening metal-line systems at z = 1.380 and z = 1.602 and one very strong absorption system at a redshift of z = 2.323. Ly_alpha emission is also seen at this redshift. While the spectrum of the OT overall cannot be simply described with a power law, the spectral index over the range 5500-8850 A is steep, F_nu ~ nu^(-0.96 +/- 0.03). Comparison of spectra from multiple epochs shows a distinct color evolution with the OT becoming redder with time over the first three days. This is the first clear example of color change in an OT detected spectroscopically.