Activity at a Glance' is gleaned from observations reported to AAVSO MyNewsFlash, BAAVSS-Alert, CVnet-Outburst, VSObs-share and VSNET-outburst. We sincerely thank all the observers who contribute timely observations and reports of activity to these email lists.
New outbursts and unusual activity reported in the last 5 days
YYYYMMDD
20260614
FO Aql
BF Ara
MU Cen
V373 Cen
V803 Cen
HL CMa
GZ Cnc
BF Crt
VW Hyi
DQ Mus
AB Nor
CL Pup
V729 Sgr
V3774 Sgr
DV TrA
ASASSN-19ct
20260613
V1113 Cyg
IX Dra
LL Lyr
20260612
TT Boo
20260611
V1504 Cyg
V503 Cyg
KV Dra #
NY Ser
20260610
CY Lyr
SS UMi
# indicates a noteworthy or unusual activity
: indicates confirmation required
* indicates time-resolved photometry required
Alert Notice - Observing Campaign #929
Request for frequent monitoring of RU Peg
May 21, 2026
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AAVSO Alert Notice - Observing Campaign #926
Monitoring Cataclysmic Variables: Hunting for Low States
May 13, 2026
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2026 outburst of TCP J05454551+5954307 = ASASSN-22dq (UGWZ)
VSNET-ALERT 28166 (Kirill Sokolovsky)
May 13, 2026
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For new papers on CVs see arxiv.org astro-ph
Updated April 15, 2026
Balmer decrements as a new diagnostic for period-bounce
Santiago Hernández-Díaz, Beate Stelzer and Daniela Muñoz-Giraldo
Disk instability model incorporating a variable inner disk radius in SS Cyg and U Gem
Mariko Kimura, Osaki Yoji
Detection of a molecular hydrogen envelope around nova GK Persei
D.P.K. Banerjee, A. Evans, T. Liimets, C.E. Woodward, T.R. Geballe, V. Joshi, S. Starrfield
Accreting White Dwarfs: An Unreview
Simone Scaringi, Christian Knigge and Domitilla de Martino
The accretion discs in WZ Sge-type stars in deep quiescence. How do they outburst?
Vitaly Neustroev, Paula Kvist, Miikka Siitonen, Veera Vuolteenaho
V515 And: An Intermediate Polar in the Period Gap Exhibiting Outbursts
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat, Simone Scaringi, Arti Joshi, David A. H. Buckley, Ajay Kumar Singh
Bradley E. Schaefer
Superhumps in active dwarf novae. Part I: ER Ursae Majoris
K. Bakowska, B. Kirpluk, P. Zielinski, M. Motylinski, A. Gurgul, J. Golonka, K. Szyszka
Luis E. Salazar Manzano, Liliana E. Rivera Sandoval, Jean-Marie Hameury, Craig O. Heinke, Iwona Kotko, Thomas J. Maccarone, Manuel Pichardo Marcano
CV artwork courtesy Darren Baskill