Items where Author is "Siwak, Michal"

Article

Fiorellino, Elenonora and Ábrahám, Péter and Kóspál, Ágnes and Kun, Mária and Alcalá, Juan M. and Caratti, o Garatti Alessio and Fernando, Cruz-Saenz de Miera and García-Álvarez, David and Giannini, Teresa and Park, Sunkyung and Siwak, Michal and Szilágyi, Máté and Covino, Elvira and Marton, Gábor and Nagy, Zsófia and Nisini, Brunella and Marianna, Szabó Zsófia and Bora, Zsófia and Cseh, Borbála and Kalup, Csilla and Krezinger, Máté and Kriskovics, Levente and Ogłoza, Waldemar and Pál, András and Sódor, Ádám and Sonbas, Eda and Szakáts, Róbert and Vida, Krisztián and Vinkó, József and Wyrzykowski, Lukasz (2024) The enigma of Gaia18cjb: A possible rare hybrid of FUor and EXor properties. ASTRONOMY & ASTROPHYSICS, 686. ISSN 0004-6361

Nagy, Zsófia and Park, Sunkyung and Ábrahám, Péter and Kóspál, Ágnes and Fernando, Cruz-Saenz de Miera and Kun, Mária and Siwak, Michal and Szilágyi, Máté and Fiorellino, Elenonora and Marton, Gábor and Szabados, László (2023) The Gaia alerted fading of the FUor-type star Gaia21elv. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 524 (3). pp. 3344-3356. ISSN 0035-8711

Siwak, Michal and Hillenbrand, Lynne A. and Kóspál, Ágnes and Ábrahám, Péter and Giannini, Teresa and Moór, Attila and Szilágyi, Máté and Park, Sunkyung and Nagy, Zsófia and Fernando, Cruz-Saenz de Miera and Fiorellino, Elenonora and Marton, Gábor and Kun, Mária (2023) Gaia21bty: An EXor lightcurve exhibiting an FUor spectrum. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 524 (4). pp. 5548-5565. ISSN 0035-8711

Valtonen, Mauri J. and Dey, Lankeswar and Zola, S. and Ciprini, S. and Kidger, M. and Siwak, Michal (2022) Host galaxy magnitude of OJ 287 from its colours at minimum light. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 514. pp. 3017-3023. ISSN 0035-8711

Szabó, Zs. M. and Kóspál, Ágnes and Ábrahám, Péter and Park, Sunkyung and Siwak, Michal and Pál, András and Bódi, Attila and Cseh, Borbála and Csörnyei, Géza and Kalup, Csilla and Könyves-Tóth, Réka and Krezinger, Máté and Kriskovics, Levente and Sárneczky, Krisztián and Seli, Bálint Attila and Szakáts, Róbert and Sódor, Ádám and Vida, Krisztián and Vinkó, József (2022) A Multi-epoch, Multiwavelength Study of the Classical FUor V1515 Cyg Approaching Quiescence. ASTROPHYSICAL JOURNAL, 936 (1). ISSN 1538-4357

Kuźmicz, Agnieszka and Goyal, Arti and Zola, Stanisław and Jamrozy, Marek and Dróżdż, Marek and Siwak, Michal (2022) Optical Variability of Eight FRII-type Quasars with 13 yr Photometric Light Curves. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 263 (1). ISSN 0067-0049

Park, Sunkyung and Kóspál, Ágnes and Ábrahám, Péter and Fernando, Cruz-Saenz de Miera and Fiorellino, Elenonora and Siwak, Michal and Nagy, Zsófia and Kun, Mária and Cseh, Borbála and Krezinger, Máté and Kriskovics, Levente and Pál, András and Szakáts, Róbert and Vida, Krisztián and Vinkó, József (2022) Photometric and Spectroscopic Study of the EXor-like Eruptive Young Star Gaia19fct. ASTROPHYSICAL JOURNAL, 941 (2). ISSN 1538-4357

Nagy, Zsófia and Ábrahám, Péter and Kóspál, Ágnes and Park, Sunkyung and Siwak, Michal and Fernando, Cruz-Saenz de Miera and Fiorellino, Elenonora and Kriskovics, Levente and Kun, Mária and Marton, Gábor and Moór, Attila and Pál, András and Szabados, László (2022) Photometric and spectroscopic study of the burst-like brightening of two Gaia -alerted young stellar objects. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 515 (2). pp. 1774-1787. ISSN 0035-8711

Lykou, Foteini and Ábrahám, Péter and Chen, Lei and Varga, J. and Kóspál, Ágnes and Siwak, Michal (2022) The disk of FU Orionis viewed with MATISSE/VLTI. First interferometric observations in L and M bands. ASTRONOMY & ASTROPHYSICS, 663. ISSN 0004-6361

Frasca, A. and Boffin, H. M. J. and Manara, C. F. and Alcalá, J. M. and Ábrahám, Péter and Kóspál, Ágnes and Siwak, Michal (2021) PENELLOPE. II. CVSO 104: A pre-main sequence close binary with an optical companion in Ori OB1. ASTRONOMY & ASTROPHYSICS, 656. ISSN 0004-6361

Manara, C. F. and Frasca, A. and Venuti, L. and Siwak, Michal and Herczeg, G. J. and Kóspál, Ágnes and Ábrahám, Péter and Fiorellino, Elenonora and Zsidi, Gabriella (2021) PENELLOPE: The ESO data legacy program to complement the Hubble UV Legacy Library of Young Stars (ULLYSES). ASTRONOMY & ASTROPHYSICS, 650. ISSN 0004-6361

Gazeas, K. and Zola, S. and Liakos, A. and Zakrzewski, B. and Rucinski, S. M. and Siwak, Michal (2021) Physical parameters of close binary systems: VIII. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 501 (2). pp. 2897-2919. ISSN 0035-8711

Park, Sunkyung and Kóspál, Ágnes and Cruz-Saenz de Miera, Fernando and Siwak, Michal and Dróżdż, Marek and Ignácz, Bernadett and Jaffe, T. Daniel and Könyves-Tóth, Réka and Kriskovics, Levente and Pál, András and Szabó, Zsófia Marianna (2021) V899 Mon: A Peculiar Eruptive Young Star Close to the End of Its Outburst. ASTROPHYSICAL JOURNAL, 923 (2). No.-171. ISSN 1538-4357

Siwak, Michal and Ogłoza, Waldemar and Krzesiński, Jerzy (2020) Disc light variability in the FUor star V646 Puppis as observed by TESS and from the ground. ASTRONOMY & ASTROPHYSICS, 644. ISSN 0004-6361

Pieńkowski, D. and Gałan, C. and Tomov, T. and Gazeas, K. and Wychudzki, P. and Siwak, Michal and Garai, Zoltán (2020) International observational campaign of the 2014 eclipse of EE Cephei. ASTRONOMY & ASTROPHYSICS, 639. ISSN 0004-6361

Cemeljic, Miljenko and Siwak, Michal (2020) Light-curve variation caused by accretion column switching stellar hemispheres. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 491 (1). pp. 1057-1063. ISSN 0035-8711

Laine, S. and Dey, L. and Valtonen, M. and Gopakumar, A. and Zola, S. and Siwak, Michal (2020) Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287. ASTROPHYSICAL JOURNAL LETTERS, 894 (1). ISSN 2041-8205

Krzesinski, J. and Blokesz, A. and Siwak, Michal and Stachowski, G. (2020) The quest for planets around subdwarfs and white dwarfs from Kepler space telescope fields. I. Techniques and tests of the methods. ASTRONOMY & ASTROPHYSICS, 642. ISSN 0004-6361

Siwak, Michal and Drozdz, M. and Gut, K. and Winiarski, M. and Ogloza, W. (2019) Mount Suhora High Cadence Photometric Survey of T Tauri-Type Stars. ACTA ASTRONOMICA, 69 (3). pp. 227-260. ISSN 0001-5237

Dey, Lankeswar and Valtonen, M. J. and Gopakuma, A. and Zola, S. and Hudec, R. and Siwak, Michal (2018) Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters. ASTROPHYSICAL JOURNAL, 866. ISSN 1538-4357

Siwak, Michal and Winiarski, Maciej and Ogloza, Waldemar and Drozdz, Marek and Zola, Stanislaw (2018) Insights into the inner regions of the FU Orionis disc. ASTRONOMY & ASTROPHYSICS, 618. ISSN 0004-6361

Marciniak, A. and Bartczak, P. and Mueller, T. and Sanabria, J. J. and Ali-Lagoa, V. and Siwak, Michal (2018) Photometric survey, modelling, and scaling of long-period and low-amplitude asteroids. ASTRONOMY & ASTROPHYSICS, 610. ISSN 0004-6361

Siwak, Michal and Ogloza, Waldemar and Moffat, Anthony F J and Matthews, Jaymie M and Rucinski, Slavek M (2018) Photometric variability of TW Hya from seconds to years as seen from space and the ground during 2013-2017. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 478 (1). pp. 758-783. ISSN 0035-8711

Bhatta, G. and Stawarz, L. and Markowitz, A. and Balasubramaniam, K. and Zola, S. and Siwak, Michal (2018) Signatures of the Disk-Jet Coupling in the Broad-line Radio Quasar 4C+74.26. ASTROPHYSICAL JOURNAL, 866 (2). ISSN 1538-4357

Goyal, A. and Stawarz, L. and Zola, S. and Marchenko, V. and Soida, M. and Siwak, Michal (2018) Stochastic Modeling of Multiwavelength Variability of the Classical BL Lac Object OJ287 on Timescales Ranging from Decades to Hours. ASTROPHYSICAL JOURNAL, 863 (2). ISSN 1538-4357

Liu, X. and Yang, P. P. and Liu, J. and Liu, B. R. and Hu, S. M. and Siwak, Michal (2017) Radio and optical intra-day variability observations of five blazars. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 469 (2). pp. 2457-2463. ISSN 0035-8711

Bhatta, G. and Zola, S. and Stawarz, Ł. and Ostrowski, M. and Winiarski, M. and Siwak, Michal (2016) Detection of Possible Quasi-periodic Oscillations in the Long-term Optical Light Curve of the BL Lac Object OJ 287. ASTROPHYSICAL JOURNAL, 832. ISSN 1538-4357

Valtonen, M. J. and Zola, S. and Ciprini, S. and Gopakumar, A. and Matsumoto, K. and Siwak, Michal (2016) Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare. ASTROPHYSICAL JOURNAL LETTERS, 819 (2). ISSN 2041-8205

Siwak, Michal and Ogloza, Waldemar and Rucinski, Slavek M. and Moffat, Anthony F. J. and Matthews, Jaymie M. (2016) Stable and unstable accretion in the classical T Tauri stars IM Lup and RU Lup as observed by MOST. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456 (4). pp. 3972-3984. ISSN 0035-8711

Siwak, Michal and Rucinski, Slavek M. and Matthews, Jaymie M. and Guenther, David B. and Kuschnig, Rainer and Moffat, Anthony F. J. and Rowe, Jason F. and Sasselov, Dimitar and Weiss, Werner W. (2014) A stable quasi-periodic 4.18-d oscillation and mysterious occultations in the 2011 MOST light-curve of TW Hya. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 444 (1). pp. 327-335. ISSN 0035-8711