Abstract
We have monitored the early evolution of the transient X-ray source GRO J0422+32 from approximately 2 weeks post-discovery and into its early decline phase at ultraviolet, optical, and radio wavelengths. Optical and ultraviolet spectra, obtained with the Perkins 1.8-m telescope and with IUE respectively, exhibit numerous, but relatively weak, high-excitation emission lines such as those arising from He II, N III, N V, and C IV superposed on a very blue continuum. We find that the ultraviolet and optical characteristics of GRO J0422+32 as well as its radio evolution, are similar to other recent well-observed X-ray novae or soft X-ray transients such as Cen X-4, V616 Mon, and Nova Muscae 1991, which suggests that GRO J0422+32 is also a member of that subclass of low mass X-ray binaries (LMXBs). Further observations as GRO J0422+32 declines into quiescence wilt be required to determine whether the compact object is a neutron star or a black hole.
| Original language | English (US) |
|---|---|
| Title of host publication | Compton Gamma-Ray Observatory |
| Editors | Neil Gehrels, Michael W. Friedlander, Daryl J. Macomb |
| Publisher | American Institute of Physics Inc. |
| Pages | 324-329 |
| Number of pages | 6 |
| ISBN (Electronic) | 1563961040 |
| DOIs | |
| State | Published - Jan 1 1993 |
| Event | Compton Symposium - St. Louis, United States Duration: Oct 15 1992 → Oct 17 1992 |
Publication series
| Name | AIP Conference Proceedings |
|---|---|
| Volume | 280 |
| ISSN (Print) | 0094-243X |
| ISSN (Electronic) | 1551-7616 |
Conference
| Conference | Compton Symposium |
|---|---|
| Country | United States |
| City | St. Louis |
| Period | 10/15/92 → 10/17/92 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Ultraviolet, optical, and radio observations of the transient X-ray Source GRO J0422+32. / Shrader, C. R.; Wagner, R. M.; Starrfield, Sumner; Hjellming, R. M.; Han, X. H.
Compton Gamma-Ray Observatory. ed. / Neil Gehrels; Michael W. Friedlander; Daryl J. Macomb. American Institute of Physics Inc., 1993. p. 324-329 (AIP Conference Proceedings; Vol. 280).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Ultraviolet, optical, and radio observations of the transient X-ray Source GRO J0422+32
AU - Shrader, C. R.
AU - Wagner, R. M.
AU - Starrfield, Sumner
AU - Hjellming, R. M.
AU - Han, X. H.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - We have monitored the early evolution of the transient X-ray source GRO J0422+32 from approximately 2 weeks post-discovery and into its early decline phase at ultraviolet, optical, and radio wavelengths. Optical and ultraviolet spectra, obtained with the Perkins 1.8-m telescope and with IUE respectively, exhibit numerous, but relatively weak, high-excitation emission lines such as those arising from He II, N III, N V, and C IV superposed on a very blue continuum. We find that the ultraviolet and optical characteristics of GRO J0422+32 as well as its radio evolution, are similar to other recent well-observed X-ray novae or soft X-ray transients such as Cen X-4, V616 Mon, and Nova Muscae 1991, which suggests that GRO J0422+32 is also a member of that subclass of low mass X-ray binaries (LMXBs). Further observations as GRO J0422+32 declines into quiescence wilt be required to determine whether the compact object is a neutron star or a black hole.
AB - We have monitored the early evolution of the transient X-ray source GRO J0422+32 from approximately 2 weeks post-discovery and into its early decline phase at ultraviolet, optical, and radio wavelengths. Optical and ultraviolet spectra, obtained with the Perkins 1.8-m telescope and with IUE respectively, exhibit numerous, but relatively weak, high-excitation emission lines such as those arising from He II, N III, N V, and C IV superposed on a very blue continuum. We find that the ultraviolet and optical characteristics of GRO J0422+32 as well as its radio evolution, are similar to other recent well-observed X-ray novae or soft X-ray transients such as Cen X-4, V616 Mon, and Nova Muscae 1991, which suggests that GRO J0422+32 is also a member of that subclass of low mass X-ray binaries (LMXBs). Further observations as GRO J0422+32 declines into quiescence wilt be required to determine whether the compact object is a neutron star or a black hole.
UR - http://www.scopus.com/inward/record.url?scp=84902865928&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84902865928&partnerID=8YFLogxK
U2 - 10.1063/1.44140
DO - 10.1063/1.44140
M3 - Conference contribution
AN - SCOPUS:84902865928
T3 - AIP Conference Proceedings
SP - 324
EP - 329
BT - Compton Gamma-Ray Observatory
A2 - Gehrels, Neil
A2 - Friedlander, Michael W.
A2 - Macomb, Daryl J.
PB - American Institute of Physics Inc.
ER -