CVNET 

Cataclysmic Variables Network

ACTIVITY AT A GLANCE

Last updated 15:47 UT on 21 April 2024

(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


20240421

GZ Cnc

BI Ori

V344 Pav

CL Pup

SS UMi


20240420

V383 Vel


20240419

SY Cnc

BP CrA

BR Lup

DQ Mus

HP Nor

AR Pic

BX Pup

V478 Sco

RY Sgr

V730 Sgr

DDE 76


20240418

CG Dra


20240416

AH Her





# indicates a noteworthy or unusual activity

:  indicates confirmation required
* indicates time-resolved photometry required











CV News


AAVSO Alert Notice 858

SS Cyg monitoring requested

April 2, 2024


AAVSO Alert Notice 857

SDSS J080846.19+313106.0 being observed this week with HST

April 1, 2024


AAVSO Alert Notice 856

Nova in Ophiuchus: N Oph 2024 = V4370 Oph = TCP J17395720-2627410

March 14, 2024


AAVSO Alert Notice 853

Monitoring requested for AT 2000ch (LMi)

February 20, 2024


AAVSO Alert Notice 838

Monitoring requested for 11 dwarf novae in support of HST observations in 2023-2024

October 26, 2023


ATel 16107

Recurrent nova T CrB has just started its Pre-eruption Dip in March/April 2023, so the eruption should occur around 2024.4 +- 0.3

June 30, 2023


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 13 February, 2024


3D physical structure and angular expansion of the remnant of the recurrent nova T Pyx

E. Santamaría, J. A. Toalá, M. A. Guerrero, G. Ramos-Larios, L. Sabin


Discovery of a nova super-remnant cavity surrounding RS Ophiuchi

M. W. Healy-Kalesh, M. J. Darnley, E. J. Harvey, A. M. Newsam


Period bouncers as detached magnetic cataclysmic variables

Matthias R. Schreiber, Diogo Belloni, Jan van Roestel


A trio of month long flares in the nova-like variable V704 And

Gabriella Zsidi, , C. J. Nixon, , T. Naylor, , J. E. Pringle, and K. L. Page


The peculiar ejecta of Nova V1425 Aquilae

C. Tappert, L. Celedón, L. Schmidtobreick


TESS light curves of cataclysmic variables -- III -- More superhump systems among old novae and novalike variables

Albert Bruch


The recurrent nova T CrB had prior eruptions observed near December 1787 and October 1217 AD

Bradley E. Schaefer


Recurrent Symbiotic Nova T Coronae Borealis Before Outburst

N.A. Maslennikova, A.M. Tatarnikov, A.A. Tatarnikova, A.V. Dodin, V.I. Shenavrin, M.A. Burlak, S.G. Zheltoukhov, I.A. Strakhov


Symbiotic star T CrB as an extreme SU UMa type dwarf nova

Krystian I lkiewicz, Joanna Miko lajewska, and Kiril A. Stoyanov


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



CV artwork courtesy Darren Baskill