Search Results - "Grotova, I"

Live to Die Another Day: The Rebrightening of AT 2018fyk as a Repeating Partial Tidal Disruption Event by Wevers, T., Coughlin, E. R., Pasham, D. R., Guolo, M., Sun, Y., Wen, S., Jonker, P. G., Zabludoff, A., Malyali, A., Arcodia, R., Liu, Z., Merloni, A., Rau, A., Grotova, I., Short, P., Cao, Z.

“…Abstract Stars that interact with supermassive black holes (SMBHs) can be either completely or partially destroyed by tides. In a partial tidal disruption…”
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eRASSt J074426.3 + 291606: prompt accretion disc formation in a ‘faint and slow’ tidal disruption event by Malyali, A, Liu, Z, Merloni, A, Rau, A, Buchner, J, Ciroi, S, Di Mille, F, Grotova, I, Dwelly, T, Nandra, K, Salvato, M, Homan, D, Krumpe, M

“…ABSTRACT We report on multiwavelength observations of the tidal disruption event (TDE) candidate eRASSt J074426.3 + 291606 (J0744), located in the nucleus of a…”
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The rebrightening of a ROSAT-selected tidal disruption event: repeated weak partial disruption flares from a quiescent galaxy? by Malyali, A, Liu, Z, Rau, A, Grotova, I, Merloni, A, Goodwin, A J, Anderson, G E, Miller-Jones, J C A, Kawka, A, Arcodia, R, Buchner, J, Nandra, K, Homan, D, Krumpe, M

“…ABSTRACT The ROSAT-selected tidal disruption event (TDE) candidate RX J133157.6−324319.7 (J1331) was detected in 1993 as a bright [0.2–2 keV flux of…”
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A radio flare associated with the nuclear transient eRASSt J234403−352640: an outflow launched by a potential tidal disruption event by Goodwin, A J, Anderson, G E, Miller-Jones, J C A, Malyali, A, Grotova, I, Homan, D, Kawka, A, Krumpe, M, Liu, Z, Rau, A

“…ABSTRACT We present an extensive radio monitoring campaign of the nuclear transient eRASSt J234402.9−352640 with the Australia Telescope Compact Array, one of…”
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Transient fading X-ray emission detected during the optical rise of a tidal disruption event by Malyali, A, Rau, A, Bonnerot, C, Goodwin, A J, Liu, Z, Anderson, G E, Brink, J, Buckley, D A H, Merloni, A, Miller-Jones, J C A, Grotova, I, Kawka, A

“…ABSTRACT We report on the SRG/eROSITA detection of ultra-soft ($kT=47^{+5}_{-5}$ eV) X-ray emission (LX =$2.5^{+0.6}_{-0.5} \times 10^{43}$ erg s−1) from the…”
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The first X-ray look at SMSS J114447.77-430859.3: the most luminous quasar in the last 9 Gyr by Kammoun, E S, Igo, Z, Miller, J M, Fabian, A C, Reynolds, M T, Merloni, A, Barret, D, Nardini, E, Petrucci, P O, Piconcelli, E, Barnier, S, Buchner, J, Dwelly, T, Grotova, I, Krumpe, M, Liu, T, Nandra, K, Rau, A, Salvato, M, Urrutia, T, Wolf, J

“…ABSTRACT SMSS J114447.77-430859.3 (z  = 0.83) has been identified in the SkyMapper Southern Survey as the most luminous quasar in the last $\sim 9\, \rm Gyr$ …”
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A radio flare associated with the nuclear transient eRASSt J234403-352640: an outflow launched by a potential tidal disruption event by Goodwin, A. J, Anderson, G. E, Miller-Jones, J. C. A, Malyali, A, Grotova, I, Homan, D, Kawka, A, Krumpe, M, Liu, Z, Rau, A

“…We present an extensive radio monitoring campaign of the nuclear transient eRASSt J234403-352640 with the Australia Telescope Compact Array, one of the most…”
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An X-ray flaring event and a variable soft X-ray excess in the Seyfert LCRS B040659.9-385922 as detected with eROSITA by Krishnan, S, Markowitz, A. G, Krumpe, M, Homan, D, Brogan, R, Haemmerich, S, Gromadzki, M, Saha, T, Schramm, M, Reichart, D. E, Winkler, H, Waddell, S, Wilms, J, Rau, A, Liu, Z, Grotova, I

“…Extreme continuum variability in AGNs can indicate extreme changes in accretion flows onto supermassive black holes. We explore the multiwavelength nature of a…”
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Rapid evolution of the recurrence time in the repeating partial tidal disruption event eRASSt J045650.3-203750 by Liu, Zhu, Ryu, Taeho, Goodwin, A. J, Rau, A, Homan, D, Krumpe, M, Merloni, A, Grotova, I, Anderson, G. E, Malyali, A, Miller-Jones, J. C. A

“…A&A 683, L13 (2024) In this letter, we present the results from further X-ray and UV observations of the nuclear transient eRASSt J045650.3-203750 (hereafter…”
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The eROSITA DR1 variability catalogue by Boller, Th, Freyberg, M, Buchner, J, Haberl, F, Maitra, C, Schwope, A, Robrade, J, Rau, A, Grotova, I, Waddell, S, Ni, Q, Salvato, M, Krumpe, M, Georgakakis, A, Merloni, A, Nandra, K

“…The extended ROentgen Survey with an Imaging Telescope Array (eROSITA) on board the Spectrum-Roentgen-Gamma (SRG) mission with its first All-Sky Survey…”
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Transient fading X-ray emission detected during the optical rise of a tidal disruption event by Malyali, A, Rau, A, Bonnerot, C, Goodwin, A. J, Liu, Z, Anderson, G. E, Brink, J, Buckley, D. A. H, Merloni, A, Miller-Jones, J. C. A, Grotova, I, Kawka, A

“…We report on the SRG/eROSITA detection of ultra-soft ($kT=47^{+5}_{-5}$ eV) X-ray emission ($L_{\mathrm{X}}=2.5^{+0.6}_{-0.5} \times 10^{43}$ erg s$^{-1}$)…”
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Multiwavelength study of extreme variability in LEDA 1154204: A changing-look event in a type 1.9 Seyfert by Saha, T, Markowitz, A, Homan, D, Krumpe, M, Haemmerich, S, Czerny, B, Graham, M, Frederick, S, Gromadzki, M, Gezari, S, Winkler, H, Buckley, D. A. H, Brink, J, Naddaf, M. H, Rau, A, Wilms, J, Gokus, A, Liu, Z, Grotova, I

“…Context. Multiwavelength studies of transients in actively accreting supermassive black holes have revealed that large-amplitude variability is frequently…”
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The more the merrier: SRG/eROSITA discovers two further galaxies showing X-ray quasi-periodic eruptions by Arcodia, R, Liu, Z, Merloni, A, Malyali, A, Rau, A, Chakraborty, J, Goodwin, A, Buckley, D, Brink, J, Gromadzki, M, Arzoumanian, Z, Buchner, J, Kara, E, Nandra, K, Ponti, G, Salvato, M, Anderson, G, Baldini, P, Grotova, I, Krumpe, M, Maitra, C, Miller-Jones, J. C. A, Ramos-Ceja, M. E

“…X-ray quasi-periodic eruptions (QPEs) are a novel addition to the group of extragalactic transients. In this work, we report the discovery of two further…”
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eRASSt J074426.3+291606: prompt accretion disc formation in a 'faint and slow' tidal disruption event by Malyali, A, Liu, Z, Merloni, A, Rau, A, Buchner, J, Ciroi, S, Di Mille, F, Grotova, I, Dwelly, T, Nandra, K, Salvato, M, Homan, D, Krumpe, M

“…We report on multi-wavelength observations of the tidal disruption event (TDE) candidate eRASSt J074426.3+291606 (J0744), located in the nucleus of a…”
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The first X-ray look at SMSS J114447.77-430859.3: the most luminous quasar in the last 9 Gyr by Kammoun, E. S, Igo, Z, Miller, J. M, Fabian, A. C, Reynolds, M. T, Merloni, A, Barret, D, Nardini, E, Petrucci, P. -O, Piconcelli, E, Barnier, S, Buchner, J, Dwelly, T, Grotova, I, Krumpe, M, Liu, T, Nandra, K, Rau, A, Salvato, M, Urrutia, T, Wolf, J

“…SMSS\,J114447.77-430859.3 ($z=0.83$) has been identified in the SkyMapper Southern Survey as the most luminous quasar in the last $\sim 9\,\rm Gyr$. In this…”
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Discovery of the luminous X-ray ignition eRASSt J234402.9$-$352640; I. Tidal disruption event or a rapid increase in accretion in an active galactic nucleus? by Homan, D, Krumpe, M, Markowitz, A, Saha, T, Gokus, A, Partington, E, Lamer, G, Malyali, A, Liu, Z, Rau, A, Grotova, I, Cackett, E. M, Buckley, D. A. H, Ciroi, S, Di Mille, F, Gendreau, K, Gromadzki, M, Krishnan, S, Schramm, M, Steiner, J. F

“…In November 2020, a new, bright object, eRASSt J234402.9$-$352640, was discovered in the second all-sky survey of SRG/eROSITA. The object brightened by a…”
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The rebrightening of a ROSAT-selected tidal disruption event: repeated weak partial disruption flares from a quiescent galaxy? by Malyali, A, Liu, Z, Rau, A, Grotova, I, Merloni, A, Goodwin, A. J, Anderson, G. E, Miller-Jones, J. C. A, Kawka, A, Arcodia, R, Buchner, J, Nandra, K, Homan, D, Krumpe, M

“…The ROSAT-selected tidal disruption event (TDE) candidate RX J133157.6-324319.7 (J1331), was detected in 1993 as a bright (0.2-2 keV flux of $(1.0 \pm 0.1)…”
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Live to die another day: the rebrightening of AT2018fyk as a repeating partial tidal disruption event by Wevers, T, Coughlin, E. R, Pasham, D. R, Guolo, M, Sun, Y, Wen, S, Jonker, P. G, Zabludoff, A, Malyali, A, Arcodia, R, Liu, Z, Merloni, A, Rau, A, Grotova, I, Short, P, Cao, Z

“…Stars that interact with supermassive black holes (SMBHs) can either be completely or partially destroyed by tides. In a partial tidal disruption event (TDE)…”
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Deciphering the extreme X-ray variability of the nuclear transient eRASSt J045650.3-203750: A likely repeating partial tidal disruption event by Liu, Zhu, Malyali, A, Krumpe, M, Homan, D, Goodwin, A. J, Grotova, I, Kawka, A, Rau, A, Merloni, A, Anderson, G. E, Miller-Jones, J. C. A, Markowitz, A. G, Ciroi, S, Di Mille, F, Schramm, M, Tang, Shenli, Buckley, D. A. H, Gromadzki, M, Jin, Chichuan, Buchner, J

“…A&A 669, A75 (2023) (Abridged) In this paper, we present the results of an exceptional repeating X-ray nuclear transient, eRASSt J045650.3-203750 (hereafter…”
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The SRG/eROSITA all-sky survey: First X-ray catalogues and data release of the western Galactic hemisphere by Merloni, A, Lamer, G, Brunner, H, Dennerl, K, Doroshenko, V, Freyberg, M. J, Friedrich, S, Gatuzz, E, Georgakakis, A, Haberl, F, Igo, Z, Kreykenbohm, I, Liu, A, Maitra, C, Malyali, A, Nandra, K, Sanders, J. S, Weber, P, Wilms, J, Arcodia, R, Aschersleben, J, Aydar, C, Balzer, F, Becker, W, Berger, K, Boller, T, Bornemann, W, Brusa, M, Buchner, J, Burwitz, V, Camilloni, F, Comparat, J, Coutinho, D, Dannhauer, S. M, Dauner, L, Dauser, T, Dolag, K, Dwelly, T, Ehl, E, Ghirardini, V, Gokus, A, Grünwald, G, Grandis, S, Grotova, I, Gruen, D, Hämmerich, S, Hamaus, N, Haubner, K, Homan, D, Joseph, W. M, Joyce, A, König, O, Khokhriakova, A, Kluge, M, Knies, J, Krippendorf, S, Krumpe, M, Kurpas, J, Li, P, Locatelli, N, Lorenz, M, Müller, S, Magaudda, E, Mannes, C, McCall, H, Michailidis, M, Migkas, K, Muñoz-Giraldo, D, Nguyen-Dang, N. T, Ni, Q, Olechowska, A, Ota, N, Pacaud, F, Pasini, T, Perinati, E, Pires, A. M, Ponti, G, Pühlhofer, G, Reh, M, Roster, W, Santangelo, A, Sasaki, M, Schmitt, J, Schrabback, T, Schuster, N, Schwope, A, Serim, M. M, Shreeram, S, Sokolova-Lapa, E, Starck, H, Stelzer, B, Stierhof, J, Tenzer, C, Tsuge, K, Urrutia, T, Willer, R, Wolf, J, Zainab, A, Zhang, X, Zheng, X

“…A&A, vol. 682, A34 (2024) The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim…”
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