IR emission-line light echo of a giant high-energy outburst in the galaxy SDSSJ0952+21

Details IR emission-line light echo of a giant high-energy outburst in the galaxy SDSSJ0952+21 IR emission-line light echo of a giant high-energy outburst in the galaxy SDSSJ0952+21

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop..483s&link_type=abstract

Spitzer Proposal ID #483

Physics

Scientific paper

The galaxy SDSSJ0952+21 is unique in showing a very intense optical emission-line light echo in response to an EUV-X-ray flare which we detected in the optical, NUV and NIR continuum. The flare was likely caused by the tidal disruption of a star by the supermassive black hole in SDSSJ0952+21. The optical spectrum of the galaxy is characterized by exceptionally strong, fading, high-ionization iron lines and a broad, redshifted very peculiar Balmer-line profile with two narrow horns. We propose Spitzer IRS observations with the high resolution modules in order to detect, for the first time, the IR emission-line light echo of a giant flare. The IR emission-line spectrum is expected to be very rich, with a wealth of possible new diagnostics.

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