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Optical and radio counterpart of Circinus X-1 (3U 1516-56)

Journal Article:

Abstract

Circinus X-1 (3U 1516-56) has a radio counterpart which, at high frequencies, show flares with the same 16.6 day periodicity as the X-ray intensity. In each cycle the radio flare occurs shortly after the intensity drop-off which defines the X-ray modulation. The radio source is positionally coincident with a faint red star having very strong H..cap alpha.. and weak He I emission lines which are probably variable. The object may be an early-type emission-line star or a symbiotic star, at a distance of 10 kpc.
Authors:
Whelan, J A.J.; Murdin, P G; Peterson, B A [1] 
  1. Anglo-Australian Observatory, Epping (Australia); and others
Publication Date:
Nov 01, 1977
Product Type:
Journal Article
Reference Number:
AIX-09-356343; EDB-78-040087
Resource Relation:
Journal Name: Mon. Not. R. Astron. Soc.; (United Kingdom); Journal Volume: 181:2
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMIC X-RAY SOURCES; RADIOWAVE RADIATION; VISIBLE RADIATION; COORDINATES; CORRELATIONS; COSMIC RADIO SOURCES; EMISSION SPECTRA; STARS; VARIATIONS; COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; RADIATIONS; SPECTRA; 640103* - Astrophysics & Cosmology- Quasi-Stellar, Radio, & X-Ray Sources- (-1987)
OSTI ID:
5331846
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: MNRAA
Submitting Site:
INIS
Size:
Pages: 259-271
Announcement Date:
Feb 01, 1978

Journal Article:

Citation Formats

Whelan, J A.J., Murdin, P G, and Peterson, B A. Optical and radio counterpart of Circinus X-1 (3U 1516-56). United Kingdom: N. p., 1977. Web.
Whelan, J A.J., Murdin, P G, & Peterson, B A. Optical and radio counterpart of Circinus X-1 (3U 1516-56). United Kingdom.
Whelan, J A.J., Murdin, P G, and Peterson, B A. 1977. "Optical and radio counterpart of Circinus X-1 (3U 1516-56)." United Kingdom.
@misc{etde_5331846,
title = {Optical and radio counterpart of Circinus X-1 (3U 1516-56)}
author = {Whelan, J A.J., Murdin, P G, and Peterson, B A}
abstractNote = {Circinus X-1 (3U 1516-56) has a radio counterpart which, at high frequencies, show flares with the same 16.6 day periodicity as the X-ray intensity. In each cycle the radio flare occurs shortly after the intensity drop-off which defines the X-ray modulation. The radio source is positionally coincident with a faint red star having very strong H..cap alpha.. and weak He I emission lines which are probably variable. The object may be an early-type emission-line star or a symbiotic star, at a distance of 10 kpc.}
journal = {Mon. Not. R. Astron. Soc.; (United Kingdom)}
volume = {181:2}
journal type = {AC}
place = {United Kingdom}
year = {1977}
month = {Nov}
}