Last updated 08:11 UT on June 22, 2025
'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
20250621
V503 Cyg
V587 Lyr
V476 Peg
V537 Peg
20250620
VW CrB
V1504 Cyg
V844 Her
20250619
SU UMa
# indicates a noteworthy or unusual activity
: indicates confirmation required
* indicates time-resolved photometry required
Nova in Lup: V462 Lup (N Lup 2025 = ASASSN-25cm = AT 2025nlr)
June 16, 2025
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TCP J18513997+3522412: large-amplitude modulation, possibly eclipsing WZ Sge-type dwarf nova?
May 26, 2025
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TCP J02472889+6758170
= Gaia DR3 517539710877791488. New CV (possible AM CVn star in outburst)
May 26, 2025
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TCP J13560585+3727068: new WZ Sge-type dwarf nova
April 30, 2025
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Photometry in support of TESS and Swift Observations of common-envelope post-novae
Active Dates: April 1, 2025 – June 29, 2025
For new papers on CVs see arxiv.org astro-ph
Updated May 29, 2025
Hot donors in cataclysmic variables: The case of EI Psc
J. Kára, S. Zharikov, M. Wolf, N. Vaidman, A. Agishev, S. Khokhlov, C.E. Chavez
A 70 pc-Diameter Nova Super-remnant Surrounding the Recurrent Nova RS Ophiuchi
Michael M. Shara, Kenneth M. Lanzetta, Alexandra Masegian, James T. Garland, Stefan Gromoll, Alexei Kniazev, Lee Townsend, David Zurek, Joanna Mikolajewska, David Valls-Gabaud, Frederick M. Walter, John K. Webb
Mariko Kimura, Takayuki Hayashi, Yuuki Wada, Wataru Iwakiri, Shigeyuki Sako, Martina Veresvarska, Simone Scaringi, Noel Castro-Segura, Christian Knigge, Keith C. Gendreau, Zaven Arzoumanian
ASASSN-14dx: A cataclysmic variable harbouring a massive pulsating white dwarf
Pasi Hakala, Ingrid Pelisoli, Boris T. Gaensicke, Pablo Rodriguez-Gil, Thomas R. Marsh, Elme Breedt, John R. Thorstensen, Anna F. Pala
S. Starrfield, M. Bose, C. E. Woodward, C. Iliadis, W. R. Hix, A. Evans, G. Shaw, D. P. K. Banerjee, T. Liimets, K. L. Page, T. R. Geballe, I. Ilyin, I. Perron, R. M. Wagner
GOTO065054+593624: a peculiar dwarf nova identified in real time via Kilonova Seekers
T. L. Killestein, G. Ramsay, M. Kennedy, L. Kelsey, D. Steeghs, S. Littlefair, B. Godson, J. Lyman, M. Pursiainen, B. Warwick, C. Krawczyk, L. K. Nuttall, E. Wickens, S. D. Alexandrov, C. M. da Silva, R. Leadbeater, K. Ackley, M. J. Dyer, F. Jiménez-Ibarra, K. Ulaczyk, D. K. Galloway, V. S. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. P. Breton, E. Pallé, D. Pollacco, A. Kumar, D. O'Neill, T. Butterley, R. Wilson, S. Mattila, A. Sahu, R. Starling, C. Y. Wang, Q. Liu, A. Li, Z. Dai, H. Feng, W. Yuan, R. Billington, A. G. Bull, S. Gaudenzi, V. Gonano, H. Krawczyk, M. T. Mazzucato, A. Pasqua, J. A. da Silva Campos, M. Torres-Guerrero, N. N. Antonov, S. J. Bean, E.T. Boeneker, S. M. Brincat, G. S. Darlington, F. Dubois, F.-J. Hambsch, D. Messier, A. Oksanen, G. Poyner, F. D. Romanov, I. D. Sharp, T. Tordai, T. Vanmunster, K. Wenzel
Bridging the Gap: OPTICAM Reveals the Hidden Spin of the WZ Sge Star GOTO 065054.49+593624.51
N. Castro Segura, Z. A. Irving, F. M. Vincentelli, D. Altamirano, Y. Tampo, C. Knigge, I. Pelisoli, D. L. Coppejans, N. Rawat, A. Castro, A. Sahu, J. V. Hernández Santisteban, M. Kimura, M. Veresvarska, R. Michel, S. Scaringi, M. Najera
Superoutbursts and Positive Superhumps are Detected During the Standstill in AT Cnc
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu, Qin-Mei Li Fu-Xing Li, Min-Yu Li, Ping Li
The Rise of Nova V1674 Herculis
Robert M. Quimby, Brian D. Metzger, Ken J. Shen, Allen W. Shafter, Hank Corbett, Madeline Overton
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
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
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
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
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