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RX J1624.9+7554: A new X-ray transient AGN

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arxiv astro-ph/9909101 v1 pith:AWSQRX6N submitted 1999-09-06 astro-ph

D. Grupe (1) , H.-C. Thomas (2) , K.M. Leighly (3) ((1) MPI fuer extraterrestrische Physik , Garching; (2) MPI fuer Astrophysik , Garching; (3) Columbia University , New York) This is my paper · ORCID
classification astro-ph
keywords objectbehaviourdiscussexplainhypothesesj1624peculiarseveral
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We report the discovery of a new X-ray transient AGN, RX J1624.9+7554. This object appeared to be bright in the ROSAT All-Sky Survey, but had turned off in two pointed observations about one and a half years later. The optical identification spectrum shows a non-emission line spectrum of a spiral galaxy at z=0.064. %We will discuss several hypotheses that can explain the peculiar behaviour of %this object. We will discuss several hypotheses that can explain the peculiar behaviour of this object.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 5 citations worldwide. Full citation record

  1. Low-hard to high-soft spectral state transitions in the faintest early-X-ray-detected optical tidal disruption event TDE 2025aarm

    astro-ph.HE 2026-07 unverdicted novelty 7.0 of 10

    TDE 2025aarm is the faintest early-X-ray-detected optical TDE and the first thermal TDE reported to show a low-hard to high-soft X-ray state transition resembling black-hole X-ray binaries.

  2. AT 2022csn: A Photometrically Peculiar Optical/UV Tidal Disruption Event in a Type II AGN

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    AT 2022csn is a luminous optical/UV tidal disruption event with an 18-day double-peaked light curve, low blackbody temperature, and large radius, hosted by a likely Type II AGN.

  3. A central tidal disruption event candidate in high redshift quasar SDSS J000118.70+003314.0

    astro-ph.GA 2024-12 conditional novelty 5.0 of 10

    SDSS J000118.70+003314.0, a z=1.4 quasar, shows a nine-year brightening and fading pattern that is modeled as a 1.9 solar-mass star tidally disrupted by a 6.5x10^7 solar-mass black hole.

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