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The regions around massive black holes can show X-ray variability on timescales from seconds to decades. Observing many black holes over different timescales can enhance our chances of detecting variability coming from (partial) tidal…

High Energy Astrophysical Phenomena · Physics 2025-11-24 Natalie A. Webb , Vincent Foustoul , Robbie Webbe , Matteo Bachetti , Erwan Quintin , Laurent Michel

This article provides a summary of XMM-Newton highlights on stellar tidal disruption events. First found with ROSAT, ongoing and upcoming sky surveys will detect these events in the 1000s. In X- rays, tidal disruption events (TDEs) provide…

High Energy Astrophysical Phenomena · Physics 2017-05-10 S. Komossa

It has been demonstrated that active galactic nuclei are powered by gas accretion onto supermassive black holes located at their centres. The paradigm that the nuclei of inactive galaxies are also occupied by black holes was predicted long…

In recent years, giant amplitude X-ray flares have been observed from a handful of non-active galaxies. The most plausible scenario of these unusual phenomena is tidal disruption of a star by a quiescent supermassive black hole at the…

Tidal disruption events (TDEs) occur when a star passes close to a massive black hole, so that the tidal forces of the black hole exceed the binding energy of a star and cause it to be ripped apart. Part of the matter will fall onto the…

High Energy Astrophysical Phenomena · Physics 2023-05-24 Natalie A. Webb , Didier Barret , Olivier Godet , Maitrayee Gupta , Dacheng Lin , Erwan Quintin , Hugo Tranin

After six years of studies following the discovery of GSN069, a link is starting to appear between the elusive Quasi-Periodic Eruptions (QPEs) and other types of nuclear transients, among which are Tidal Disruption Events (TDEs). As such,…

High Energy Astrophysical Phenomena · Physics 2025-12-01 E. Quintin , N. Khan , N. A. Webb , R. Webbe , R. D. Saxton , G. Miniutti , M. Giustini

Black holes at the centre of quiescent galaxies can be switched on when they accrete gas that is gained from stellar tidal disruptions. A star approaching a black hole on a low angular momentum orbit may be ripped apart by tidal forces,…

High Energy Astrophysical Phenomena · Physics 2016-07-20 Deborah Mainetti , Sergio Campana , Monica Colpi

Tidal disruption events (TDEs) correspond to the destruction of a star by the tidal forces around a black hole, leading to outbursts which can last from months to years. These transients are rare, and increasing the current sample is…

Over recent decades, astronomy has entered the era of massive data and real-time surveys. This is improving the study of transient objects - although they still contain some of the most poorly understood phenomena in astrophysics, as it is…

High Energy Astrophysical Phenomena · Physics 2024-05-24 E. Quintin , N. A. Webb , I. Georgantopoulos , M. Gupta , E. Kammoun , L. Michel , A. Schwope , H. Tranin , I. Traulsen

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…

High Energy Astrophysical Phenomena · Physics 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…

High Energy Astrophysical Phenomena · Physics 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…

High Energy Astrophysical Phenomena · Physics 2024-10-30 K. Szekerczes , T. Ryu , S. H. Suyu , S. Huber , M. Oguri , L. Dai

The XMM-Newton observatory has accumulated a vast archive of over 17,000 X-ray observations over the last 25 years. However, the standard data processing pipelines may fail to detect certain types of transient X-ray sources due to their…

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…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Ildar Khabibullin , Sergey Sazonov

The ultrasoft X-ray flare 2XMMi J184725.1-631724 was serendipitously detected in two XMM-Newton observations in 2006 and 2007, with a peak luminosity of 6X10^43 erg/s. It was suggested to be a tidal disruption event (TDE) because its…

High Energy Astrophysical Phenomena · Physics 2017-12-27 Dacheng Lin , Jay Strader , Eleazar R. Carrasco , Olivier Godet , Dirk Grupe , Natalie A. Webb , Didier Barret , Jimmy A. Irwin

Tidal disruption events (TDEs), which occur when stars enter the tidal radii of supermassive black holes (SMBHs) and are subsequently torn apart by their tidal forces, represent intriguing phenomena that stimulate growing research interest…

We present an expansion of FLEET, a machine learning algorithm optimized to select transients that are most likely to be tidal disruption events (TDEs). FLEET is based on a random forest algorithm trained on the light curves and host galaxy…

High Energy Astrophysical Phenomena · Physics 2023-06-14 Sebastian Gomez , V. Ashley Villar , Edo Berger , Suvi Gezari , Sjoert van Velzen , Matt Nicholl , Peter K. Blanchard , Kate. D. Alexander

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…

High Energy Astrophysical Phenomena · Physics 2016-01-20 Krzysztof Hryniewicz , Roland Walter

Stars that pass too close to a super-massive black hole may be disrupted by strong tidal forces. OGLE16aaa is one such tidal disruption event (TDE) which rapidly brightened and peaked in the optical/UV bands in early 2016 and subsequently…

High Energy Astrophysical Phenomena · Physics 2020-07-22 Jari J. E. Kajava , Margherita Giustini , Richard D. Saxton , Giovanni Miniutti
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