- Tytuł:
- Is the symbiotic recurrent nova T CrB late? Recent photometric evolution and comparison with past pre-outburst behaviour
- Autorzy:
-
Dubois, Franky
Szyszka, Krzysztof
Kvernadze, Teimuraz
Merc, Jaroslav
Maskoliūnas, Marius
Galdies, Charles
Pylypenko, Uliana
Golonka, Jan
Zdanavičius, Justas
Moździerski, Dawid
Drozdz, Marek
Vanaverbeke, Siegfried
Burgaz, Umut
Brincat, Stephen M
Kotysz, Krzysztof
Olszewska, Justyna M.
Dennefeld, Michel
Zieliński, Paweł
Marzec, Mateusz
Szklarz, Mateusz
Japelj, Jure
Zoła, Stanisław
Gazeas, Kosmas
Damljanović, Goran
Čepas, Vytautas
Gil, Bartosz
Reguitti, Andrea
Pakštienė, Erika
Bronikowski, Mateusz
Awiphan, Supachai
Gurgul, Agnieszka
Wyrzykowski, Łukasz
Mikołajczyk, Przemysław J.
Carrasco, Josep Manel
Qvam, Jan Kåre Trandem
Hambsch, Franz-Josef
Stojanović, Milan
Popowicz, Adam
Badura, Magdalena
Pucek, Alicja
Kowalska, Aleksandra
Joachimczyk, Barbara
Bąkowska, Karolina
Mihelcic, Matej
Hofbauer, Piotr
Ogłoza, Waldemar
Beck, Paul G.
Liakos, Alexios
Kurowski, Sebastian - Opis:
- T CrB is a symbiotic recurrent nova that last erupted in 1946. Given its recurrence time-scale of approximately 80 yr, the next outburst is eagerly anticipated by the astronomical community. In this work, we analyse the optical light curves of T CrB, comparing recent photometric evolution with historical data to evaluate potential predictive indicators of nova eruptions. Although the ‘superactive’ phases preceding both the 1946 and anticipated eruptions are strikingly similar, the subsequent photometric behaviour differs. We find that the decline in brightness observed in 2023, interpreted by some as a ‘pre-eruption dip’, deviates from the deep minimum recorded prior to the 1946 event and does not reliably predict the eruption timing. Recent photometric and spectroscopic observations indicate that the system is returning to a high-accretion state. Given this, an eruption may be imminent, even without distinct precursors. While the next eruption of T CrB will be a major scientific event, its expected peak brightness of V $\sim$ 2 mag highlights the importance of setting realistic public expectations for what will be a visually modest, yet astrophysically very significant, celestial event.
- Dostawca treści:
- Repozytorium Uniwersytetu Jagiellońskiego
Artykuł