Ultraviolet, optical, and radio observations of the transient X-ray Source GRO J0422+32

C. R. Shrader; R. M. Wagner; Sumner Starrfield; R. M. Hjellming; X. H. Han

doi:10.1063/1.44140

Ultraviolet, optical, and radio observations of the transient X-ray Source GRO J0422+32

C. R. Shrader, R. M. Wagner, Sumner Starrfield, R. M. Hjellming, X. H. Han

CLAS-NS: Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

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	https://doi.org/10.1063/1.44140
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

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.44140

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Shrader, C. R., Wagner, R. M., Starrfield, S., Hjellming, R. M., & Han, X. H. (1993). Ultraviolet, optical, and radio observations of the transient X-ray Source GRO J0422+32. In N. Gehrels, M. W. Friedlander, & D. J. Macomb (Eds.), Compton Gamma-Ray Observatory (pp. 324-329). (AIP Conference Proceedings; Vol. 280). American Institute of Physics Inc.. https://doi.org/10.1063/1.44140

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

Shrader, CR, Wagner, RM, Starrfield, S, Hjellming, RM & Han, XH 1993, Ultraviolet, optical, and radio observations of the transient X-ray Source GRO J0422+32. in N Gehrels, MW Friedlander & DJ Macomb (eds), Compton Gamma-Ray Observatory. AIP Conference Proceedings, vol. 280, American Institute of Physics Inc., pp. 324-329, Compton Symposium, St. Louis, United States, 10/15/92. https://doi.org/10.1063/1.44140

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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.

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