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  eROSITA detection rates for tidal disruptions of white dwarfs by intermediate mass black holes

Malyali, A., Rau, A., & Nandra, K. (2019). eROSITA detection rates for tidal disruptions of white dwarfs by intermediate mass black holes. Monthly Notices of the Royal Astronomical Society, 489(4), 5413-5423. doi:10.1093/mnras/stz2520.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-4DE3-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-4DE4-4
Genre: Journal Article

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eROSITA detection rates for tidal disruptions of white dwarfs by intermediate mass black holes.pdf (Any fulltext), 540KB
 
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Malyali, A.1, Author              
Rau, A.1, Author              
Nandra, K.1, Author              
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1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: White dwarf black hole tidal disruption events (herein WTDEs) present an opportunity to probe the quiescent intermediate mass black hole population in the Universe. We run an extensive set of Monte Carlo based simulations to explore SRG/eROSITA’s detection sensitivity to WTDEs as a function of black hole mass, redshift, and time offset between event flaring and it first being observed. A novel estimate of WTDE rate densities from globular clusters and dwarf galaxies is also presented. We combine this with estimated detection sensitivities to infer the rate of eROSITA detecting these events. Depending on the estimate of the intrinsic rate of WTDEs, we anticipate that eROSITA may detect three events over its 4 yr all-sky survey. eROSITA will be most sensitive to systems with black hole masses above 104M⁠, and is most likely to catch these within 5 d of flaring.

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 Dates: 2019-09-20
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz2520
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 489 (4) Sequence Number: - Start / End Page: 5413 - 5423 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150