Tidal disruption event in NGC 4845

Tidal disruption event in NGC 4845

Marek Nikołajuk and Roland Walter

In January 2011, INTEGRAL discovered a hard X-ray are (IGR J12580+0134) in the centre of NGC 4845, a Seyfert 2 galaxy never detected at high-energy previously. The are was seen around 6 months and it was also observed by XMM-Newton, Swift satellites and MAXI detector onboard ISS. Analysis of light-curve of the source points out the tidal disruption event by supermassive black hole (BH) of an object with a mass of 14-30 Jupiter. It could be a giant planet or a brown dwarf. The hot corona has been observed. The variable flux may suggest appearing of an quasi-periodic oscillation (QPO).

Proceedings of the Polish Astronomical Society, vol. 1, 151-153 (2014)

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