RXTE

Special Notice #198: Possible Outburst of GK Per

March 9, 2010: The old nova (1901) and x-ray source GK Per may be going into outburst. Reports beginning late on 2010 March 6 UT show it brightening from its minimum visual magnitude of about 13.1 to 12.3-12.4.
 
When GK Per went nova in 1901, its disk was destroyed. Eventually the disk was re-established, and dwarf nova-like outbursts were observed.

Alert Notice 211: AAVSO on World Wide Web AND 1958+56 V1028 Cygni in outburst AND Brightening of 1601+67 AG Draconis AND 0409-71 VW Hydri observed with EUVE AND Reminders - GK Persei and T Pyxidis

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 211 (August 1, 1995)

AAVSO ON WORLD WIDE WEB

We are proud to announce that the AAVSO now has a home page available on the World
Wide Web (WWW). The address of our home page on the WWW is:

    http://www.aavso.org

Alert Notice 219: Minor outburst of 0324+43 GK Persei AND 0059+53 Nova Cassiopeiae 1995 [V723 Cas]

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso@aavso.org
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 219 (February 28, 1996)

MINOR OUTBURST OF 0324+43 GK PERSEI

Alert Notice 222: Extreme fading of 1921+50 CH Cygni AND Reminder - Request to monitor 2138+43 SS Cygni for Observations with HST, EUVE, and RXTE

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET:  aavso@aavso.org
Tel. 617-354-0484       FAX 617-354-0665

AAVSO ALERT NOTICE 222 (June 25, 1996)

EXTREME FADING OF 1921+50 CH CYGNI

The brightest Z And-type symbiotic star known, CH Cyg, is undergoing a
significant fading as indicated by the following observations: