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  NGC 300 ULX1: Spin evolution, super-Eddington accretion, and outflows

Vasilopoulos, G., Petropoulou, M., Koliopanos, F., Ray, P. S., Bailyn, C. B., Haberl, F., et al. (2019). NGC 300 ULX1: Spin evolution, super-Eddington accretion, and outflows. Monthly Notices of the Royal Astronomical Society, 488(4), 5225-5231. doi:10.1093/mnras/stz2045.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-3FE2-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-3FE3-5
Genre: Journal Article

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Vasilopoulos, G., Author
Petropoulou, M., Author
Koliopanos, F., Author
Ray, P. S., Author
Bailyn, C. B., Author
Haberl, F.1, Author              
Gendreau, K., Author
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1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: NGC 300 ULX1 is an ultraluminous X-ray pulsar, showing an unprecedented spin evolution, from about 126 s to less than 20 s in only 4 yr, consistent with steady mass accretion rate. Following its discovery we have been monitoring the system with Swift and NICER to further study its properties. We found that even though the observed flux of the system dropped by a factor of ≳20, the spin-up rate remained almost constant. A possible explanation is that the decrease in the observed flux is a result of increased absorption of obscuring material due to outflows or a precessing accretion disc.

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 Dates: 2019-08-05
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stz2045
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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: 488 (4) Sequence Number: - Start / End Page: 5225 - 5231 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150