A dataset provided by the European Space Agency

Name: A new observation of the tidal disruption candidate 2MASX 1446+68
Published: 2019-05-29T22:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	082333
Title	A new observation of the tidal disruption candidate 2MASX 1446+68
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0823330101
DOI	https://doi.org/10.5270/esa-own8sjh
Principal Investigator, PI	Mr Richard Saxton
Abstract	In 2016 XMM-Newton detected a flare from the galaxy 2MASX 1446+68 during a slew.Optical spectra subsequently showed that the galaxy is non-active and a goodcandidate for a tidal disruption event, where a star is shredded and consumed bya super-massive black hole. We monitored the evolution of the disruption withXMM and Swift finding a drop in X-ray flux of a factor 20, while the UV hasremained high and constant. This is the first event where the X-ray flux fadesbefore the UV and casts doubt on currently fashionable models which ascribe theUV/optical emission to reprocessing of the X-ray flux. We ask for an XMMobservation in AO17 to continue to monitor the X-ray and UV flux and obtain ahigh quality spectrum.
Publications	XMMSL2 J144605.0+685735: a slow tidal disruption event \|Saxton R. D. Read A. M. et al. \| A&A \| 630-98 \| 2019 \| 2019A&A...630A..98S \| http://ui.adsabs.harvard.edu/#abs/2019A&A...630A..98S The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-04-25T22:31:49Z/2018-04-26T05:13:29Z
Version	21.51_20241115_1113
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2019-05-29T22:00:00Z
Last Update	2026-06-19
Keywords	"tidal disruption event", "xray flux", "2016 xmm newton", "XMM", "optical spectra subsequently", "quality spectrum", "galaxy 2masx 1446", "XMM-Newton", "swift finding", "fashionable models", "optical emission", "casts doubt", "uv flux", "xray flux fades"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Mr Richard Saxton, 2019, 'A new observation of the tidal disruption candidate 2MASX 1446+68', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-own8sjh
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.