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We discuss the potential of the eROSITA telescope on board the Spectrum-Roentgen-Gamma (SRG) observatory to detect stellar tidal disruption events (TDE) during its 4-year all-sky survey. These events are expected to reveal themselves as…

高能天体物理现象 · 物理学 2015-06-15 Ildar Khabibullin , Sergey Sazonov , Rashid Sunyaev

This paper presents a systematic study of X-ray-selected canonical tidal disruption events (TDEs) discovered in the western Galactic hemisphere of the first two eROSITA all-sky surveys (eRASS1 and eRASS2) performed between Dec 2019 and Dec…

We present Chandra X-ray observations of four optically-selected tidal disruption events (TDEs) obtained 4-9 years after discovery. Three sources were detected with luminosities between 9X10^40 and 3X10^42 erg/s. The spectrum of PTF09axc is…

高能天体物理现象 · 物理学 2020-02-12 P. G. Jonker , N. C. Stone , A. Generozov , S. van Velzen , B. Metzger

We select seventy tidal disruption event (TDE) candidates among X-ray transients discovered during the eROSITA all-sky surveys in the Eastern Galactic hemisphere between December 2020 and February 2022 (eRASS1--5). We cross-match each X-ray…

We present a systematic analysis of the radio properties of an X-ray selected sample of tidal disruption event (TDE) candidates discovered by the eROSITA telescope. We find radio sources coincident with half of the transient events (11…

高能天体物理现象 · 物理学 2025-04-15 A. J. Goodwin , M. Burn , G. E. Anderson , J. C. A. Miller-Jones , I. Grotova , P. Baldini , Z. Liu , A. Malyali , A. Rau , M. Salvato

We perform a comprehensive study of the X-ray emission from 70 transient sources which have been classified as a tidal disruption event (TDE) in the literature. We explore the properties of these candidates using nearly three decades of…

高能天体物理现象 · 物理学 2017-04-12 Katie Auchettl , James Guillochon , Enrico Ramirez-Ruiz

We present a systematic analysis of the X-ray emission of a sample of 17 optically selected, X-ray-detected tidal disruption events (TDEs) discovered between 2014 and 2021. The X-ray light curves show a diverse range of temporal behaviors,…

高能天体物理现象 · 物理学 2024-04-09 Muryel Guolo , Suvi Gezari , Yuhan Yao , Sjoert van Velzen , Erica Hammerstein , S. Bradley Cenko , Yarone M. Tokayer

More than 100 tidal disruption events (TDEs) have been detected at multi-bands, which can be viewed as extreme laboratories to investigate the accretion physics and gravity in the immediate vicinity of massive black holes. Future transient…

高能天体物理现象 · 物理学 2024-01-26 Zhiwei Chen , Youjun Lu , Yunfeng Chen

Observational astronomy of tidal disruption events (TDEs) began with the detection of X-ray flares from quiescent galaxies during the ROSAT all-sky survey of 1990-1991. The flares complied with theoretical expectations, having high peak…

高能天体物理现象 · 物理学 2021-03-30 R. Saxton , S. Komossa , K. Auchettl , P. G Jonker

Tidal disruption events (TDEs) are multi-messenger transients in which a star is tidally destroyed by a supermassive black hole at the center of galaxies. The Rubin Observatory Legacy Survey of Space and Time (LSST) is anticipated to…

高能天体物理现象 · 物理学 2024-10-30 K. Szekerczes , T. Ryu , S. H. Suyu , S. Huber , M. Oguri , L. Dai

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$^{-1}$) from the tidal disruption event (TDE) candidate AT 2022dsb $\sim$14 days before peak…

Most tidal disruption events (TDEs) are currently found in time-domain optical and soft X-ray surveys, both of which are prone to significant obscuration. The infrared (IR), however, is a powerful probe of dust-enshrouded environments, and…

During a close encounter between a star and a supermassive black hole, the star can get disrupted by the black hole's tidal forces, resulting in a tidal disruption event (TDE). The accretion of the star's material onto the black hole…

高能天体物理现象 · 物理学 2022-05-04 J. Hampel , S. Komossa , J. Greiner , T. H. Reiprich , M. Freyberg , T. Erben

Tidal disruption events are rare and diverse transients that occur when a star is torn apart by a supermassive black hole and accreted, which can result in a supersoft X-ray thermal transient. Here, we present nine tidal disruption event…

高能天体物理现象 · 物理学 2025-08-13 R. A. J. Eyles-Ferris , R. L. C. Starling , P. T. O'Brien , K. L. Page , P. A. Evans

We study X-ray bright tidal disruption events (TDE), close to the peak of their emission, with the intention of understanding the evolution of their light curves and spectra. Candidate TDE are identified by searching for soft X-ray flares…

星系天体物理 · 物理学 2017-02-01 R. D. Saxton , A. M. Read , S. Komossa , P. Lira , K. D. Alexander , M. H. Wieringa

We derive the first hard X-ray luminosity function (XLF) of stellar tidal disruption events (TDEs) by supermassive black holes (SMBHs), which gives an occurrence rate of TDEs per unit volume as a function of peak luminosity and redshift,…

高能天体物理现象 · 物理学 2016-06-22 Taiki Kawamuro , Yoshihiro Ueda , Megumi Shidatsu , Takafumi Hori , Nobuyuki Kawai , Hitoshi Negoro , Tatehiro Mihara

The existence of optical-ultraviolet Tidal Disruption Events (TDEs) could be considered surprising because their electromagnetic output was originally predicted to be dominated by X-ray emission from an accretion disk. Yet over the last…

高能天体物理现象 · 物理学 2020-11-04 Sjoert van Velzen , Thomas W. -S. Holoien , Francesca Onori , Tiara Hung , Iair Arcavi

We report the discovery of a short, large amplitude X-ray flare from AT2019vcb (aka Tormund), a tidal disruption event at $z=0.088$. The discovery is based on the data from the SRG/eROSITA X-ray telescope which happened to observe the…

高能天体物理现象 · 物理学 2025-04-28 Sergei Bykov , Marat Gilfanov , Rashid Sunyaev , Pavel Medvedev

We performed a systematic search for stellar tidal disruption events (TDE) by looking for X-ray sources that were detected during the ROSAT All Sky Survey and faded by more than an order of magnitude over the next two decades according to…

高能天体物理现象 · 物理学 2015-06-22 Ildar Khabibullin , Sergey Sazonov

Owing to their thermal emission, tidal disruption events (TDEs) were regularly detected in the soft X-rays and sometimes in the optical. Only a few TDEs have been detected at hard X-rays: two are high redshift beamed events, one of which…

高能天体物理现象 · 物理学 2016-01-20 Krzysztof Hryniewicz , Roland Walter
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