V818 Sco : Active state since June

V818 Sco (Sco X-1) was faint around June 21 - 25, and then, recovered to 12.7mag in the end of June (vsnet-campaign-xray 71). The activity became much stronger after the recovering (vsnet-campaign-xray 74, vsnet-campaign-xray 76). E. Kuulkers commented that Sco X-1 is known to be flaring on timescales of hours and X-rays and optical correlate well during such flares (vsnet-campaign-xray 75). The active state has continued around 12.0 - 12.7mag (vsnet-campaign-xray 77, 79, 80, 85, 86).

Links: RXTE/ASM recent X-ray light curve: http://heasarc.gsfc.nasa.gov/cgi-bin/xte_weather/xte_lc?source=SCOX1

General Information on This Object