CVNET 

Cataclysmic Variables Network

ACTIVITY AT A GLANCE

Last updated 07:32 UT on 05 June 2023

(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 ema il lists.

New outbursts and unusual activity reported in the last 5 days


YYYYMMDD


20230604

Z Cam

CR Boo


20230603

AB Dra

V426 Oph

NY Ser

TY PsA

ER UMa

HS Vir

ASASSN-13bc

ASASSN-13cs


20230602

FX Cep

V503 Cyg

V542 Cyg

CY Lyr

V419 Lyr

V587 Lyr

V476 Peg:

OU Vir

CRTS J163120.9+103134

SDSS J162830.89+240259.1



             

# indicates a noteworthy or unusual activity

:  indicates confirmation required
* indicates time-resolved photometry required











CV News


AAVSO Alert Notice 825

GP Com being observed with HST May 25-26

May 22, 2023


AAVSO Alert Notice 817

Coverage needed of MU Cam in current low state

March 15, 2023


AAVSO Alert Notice 796

Monitoring requested for 12 dwarf novae in support of HST observations in 2022-2023

19 October, 2022


AAVSO Alert Notice 754

Monitoring requested for 15 VY Scl CVs in support of HST observations

14 September 2021


Recent Papers on CVs

For new papers on CVs see arxiv.org astro-ph


Updated 23 April 2023


A catalogue of cataclysmic variables from 20 years of the Sloan

Digital Sky Survey with new classifications, periods, trends and

oddities.

Keith Inight, Boris T. Gänsicke, Elmé Breedt, Henry T. Israel, Stuart P. Littlefair,

Christopher J. Manser, Tom R. Marsh, Tim Mulvany, Anna Francesca Pala,

John R. Thorstensen


The B & V Light Curves for Recurrent Nova T CrB From 1842--2022, the Unique Pre- and Post-Eruption High-States, the Complex Period Changes, and the Upcoming Eruption in 2025.5±1.3

Bradley E. Schaefer


A magnetic valve at L1 revealed in TESS photometry of the asynchronous polar BY Cam

Paul A. Mason, Colin Littlefield, Lorena C. Monroy, John F. Morales, Pasi Hakala, Peter Garnavich, Paula Szkody, Mark R. Kennedy, Gavin Ramsay, Simone Scaringi


Testing the third body hypothesis in the Cataclysmic Variables LU Camelopardalis, QZSerpentis, V1007 Herculis and BK Lyncis

Carlos E. Chavez, Nikolaos Georgakarakos, Andres Aviles, Hector Aceves, Gagik Tovmassian, Sergey Zharikov, J. E. Perez-Leon, Francisco Tamayo


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


The 2021 outburst of RS Oph: a pictorial atlas of the spectroscopic evolution. II. From day 19 to 102 (solar conjunction)

U. Munari & P. Valisa


Spectroscopic Observations of V455 Andromedae Superoutburst in 2007: the Most Exotic Spectral Features in Dwarf Nova Outbursts

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


The 2019 outburst of the 2005 classical nova V1047 Cen: a record breaking dwarf nova outburst or a new phenomenon?

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


The intermediate polar cataclysmic variable GK Persei 120 years after the nova explosion: a first dynamical mass study

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