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Astron. Astrophys. 362, L25-L28 (2000)

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Letter to the Editor

RX J1420.4+5334 - another tidal disruption event? *

J. Greiner 1, R. Schwarz 1, S. Zharikov 2,3 and M. Orio 4,5

1 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
2 Special Astrophysical Observatory, 357147 Nizhnij Arkhyz, Russia
3 OAN, Instituto de Astronomía, UNAM, 22860 Ensenada, México
4 Osservatorio Astronomico di Torino, Strada Osservatorio 20, 10125 Pino Torinese (TO), Italy
5 University of Wisconsin, Department of Physics, 1150 University Avenue, Madison, WI 53706, USA

Received 18 August 2000 / Accepted 25 September 2000

Abstract

We have discovered a transient X-ray source, RX J1420.4+5334, which displays a ROSAT flux variation of [FORMULA] 150 between the ROSATAll-Sky-Survey in 1990 and a preceding pointed ROSAT observations in July 1990. Optical observations suggest a non-active galaxy as the only visible counterpart. We therefore tentatively identify RX J1420.4+5334 as a tidal disruption event in a non-active galaxy.

Key words: accretion, accretion disks – galaxies: active – galaxies: individual: – galaxies: nuclei – X-rays: galaxies

* Partly based on observations collected at the German-Spanish Astronomical Centre, Calar Alto, operated by the MPI für Astronomie, Heidelberg, jointly with the Spanish National Commission for Astronomy, and the WIYN telescope, operated the the University of Wisconsin, Indiana University, Yale University, and the National Optical Astronomy Observatories.

Send offprint requests to: J. Greiner (jgreiner@aip.de)

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© European Southern Observatory (ESO) 2000

Online publication: October 24, 2000
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