CVNET
Cataclysmic Variables Network
ACTIVITY AT A GLANCE
Last updated 21:34 UT on 24 June 2022
(All objects mentioned in this section are in the International Variable Star Index; additionally, VSX links have been given for selected cataclysmic variables)
'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 72 hours
YYYYMMDD
20220623
V516 Cyg
SU UMa
20220621
V394 Aps
BF Ara
HL CMa
V342 Cen
V436 Cen
V803 Cen
BP CrA
AG Hya
X Leo
CY Lyr
HP Nor
GS Pav
BX Pup
V551 Sgr
V730 Sgr
V598 Sco
UZ Ser
VW Tuc
TW Vir
SY Vol
CTCV J1940-4724
RX J1831.7+6511
Current superoutbursts (since ...)
V485 Cen (20220602, EI Psc star, precursor outburst 20220527)
ASASSN-22ha #* (20220520, UGWZ)
MASTER OT J172758.09+380021.5 (20220514)
TCP J14225968+4122545 = XM116HT #* (20220509, UGWZ)
BC UMa #* (20220430, UGWZ, faint superoutburst)
Z Cam-type dwarf novae at standstill
HL CMa (since 20211205 or earlier)
Z Cam ends long 1,051 day standstill on 20210828 (started on 20181012)
# indicates a noteworthy or unusual activity
: indicates confirmation required
* indicates time-resolved photometry required
CV News
Another dwarf nova outburst of X Serpentis (Nova 1903) began on 2022 June 9 (a previous outburst outburst occurred from 2021 July 28 to September 10).
Nova in Musca – Nova Muscae 2022 (= ASASSN-22hw = AT 2022mmp)
Note: N Mus 2022 = V415 Mus
14 June 2022
Recurrent nova U Scorpii in surprise eruption needs long time series for the next month
7 June 2022
RY Serpentis observations needed now for HST coverage
6 June 2022
Monitoring requested for 11 dwarf novae in support of HST observations in 2021–2022
26 October 2021
Monitoring requested for 15 VY Scl CVs in support of HST observations
14 September 2021
Monitoring requested for seven intermediate polars
23 August 2021
Recent Papers on CVs
For new papers on CVs see arxiv.org astro-ph
Updated 8 June 2022
V392 Persei: a γ-ray bright nova eruption from a known dwarf nova
F. J. Murphy-Glaysher, M. J. Darnley, É. J. Harvey, A. M. Newsam, K. L. Page, S. Starrfield, R. M. Wagner, C. E. Woodward, D. M. Terndrup, S. Kafka, T. Arranz Heras, P. Berardi, E. Bertrand, R. Biernikowicz, C. Boussin, D. Boyd, Y. Buchet, M. Bundas, D. Coulter, D. Dejean, A. Diepvens, S. Dvorak, J. Edlin, T. Eenmae, H. Eggenstein, R. Fournier, O. Garde, J. Gout, D. Janzen, P. Jordanov, H. Kiiskinen, D. Lane, R. Larochelle, R. Leadbeater, D. Mankel, G. Martineau, I. Miller, R. Modic, J. Montier, M. Morales Aimar, E. Muyllaert, R. Naves Nogues, D. O'Keeffe, A. Oksanen, M. Pyatnytskyy, R. Rast, B. Rodgers, D. Rodriguez Perez, F. Schorr, E. Schwendeman, S. Shadick, S. Sharpe, F. Soldán Alfaro, T. Sove, G. Stone, T. Tordai, R. Venne, W. Vollmann, M. Vrastak, K. Wenzel
Romanov V48: unusual intermediate polar in the period gap
Taichi Kato (Kyoto U), Filipp D. Romanov
Transients from the Cataclysmic Deaths of Cataclysmic Variables
Brian D. Metzger, Yossef Zenati, Laura Chomiuk, Ken J. Shen, Jay Strader
U. Munari & P. Valisa
Yusuke Tampo, Daisaku Nogami, Taichi Kato, Kazuya Ayani, Hiroyuki Naito, Norio Narita, Mitsugu Fujii, Osamu Hashimoto, Kenzo Kinugasa Satoshi Honda, Hidenori Takahashi, Shin-ya Narusawa, Makoto Sakamoto, Akira Imada
Periodic modulations during a long outburst in V363 Lyr
Taichi Kato
MP Gem: VY Scl-type star, finally
Taichi Kato
E. Aydi, K. V. Sokolovsky, J. S. Bright, E. Tremou, M. M. Nyamai, A. Evans, J. Strader, L. Chomiuk, G. Myers, F-J. Hambsch, K. L. Page, D. A. H. Buckley, C. E. Woodward, F. M. Walter, P. Mróz, P. J. Vallely, T. R. Geballe, D. P. K. Banerjee, R. D. Gehrz, R. P. Fender, M. Gromadzki, A. Kawash, C. Knigge, K. Mukai, U. Munari, M. Orio, V. A. R. M. Ribeiro, J. L. Sokoloski, S. Starrfield, A. Udalski, P. A. Woudt
MGAB-V859 and ZTF18abgjsdg: ER UMa-type dwarf novae showing standstills
Taichi Kato, Naoto Kojiguchi (Kyoto U)
The role of complex ionized absorber in the soft X-ray spectra of Intermediate Polars
Nazma Islam, Koji Mukai
The Detailed Light Curve Evolution of V1674 Her (Nova Her 2021)
R. M. Quimby, A. W. Shafter, H. Corbett
A. Álvarez-Hernández (1,2), M. A. P. Torres (1,2), P. Rodríguez-Gil (1,2), T. Shahbaz (1,2), G. C. Anupama (3), K. D. Gazeas (4), M. Pavana (3,5), A. Raj (6), P. Hakala (7), G. Stone (8), S. Gomez (9), P. G. Jonker (10,11), J.-J. Ren (12), G. Cannizzaro (10,11), I. Pastor-Marazuela (13,14), W. Goff (15), J. M. Corral-Santana (16), R. Sabo (17) ((1) Instituto de Astrofísica de Canarias, (2) Departamento de Astrofísica, Universidad de La Laguna, (3) Indian Institute of Astrophysics, (4) Section of Astrophysics, Astronomy and Mechanics, Department of Physics, National and Kapodistrian University of Athens, (5) Department of Physics, Pondicherry University, (6) Dept. of Physics & Astrophysics, University Road, University Enclave, (7) Finnish Centre for Astronomy with ESO (FINCA), Quantum, University of Turku, (8) First Light Observatory Systems, (9) Center for Astrophysics | Harvard & Smithsonian, (10) SRON, Netherlands Institute for Space Research, (11) Department of Astrophysics / IMAPP, Radboud University, (12) CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, (13) Anton Pannekoek Institute, University of Amsterdam, (14) ASTRON, the Netherlands Institute for Radio Astronomy, (15) American Association of Variable Star Observers, (16) European Southern Observatory, (17) American Association of Variable Star Observers)
CV artwork courtesy Darren Baskill