A minimal timescale for the continuum in 4U 1608-52 and Aql X-1

Mohamed, K. and Sonbas, E. and Dhuga, K. S. and Göğüş, Ersin and Tuncer, A. and Abd Allah, N. N. and Ibrahim, A. (2021) A minimal timescale for the continuum in 4U 1608-52 and Aql X-1. Monthly Notices of the Royal Astronomical Society: Letters, 502 (1). L72-L78. ISSN 1745-3925 (Print) 1745-3933 (Online)

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Similar to black hole X-ray binary transients, hysteresis-like state transitions are also seen in some neutron-star X-ray binaries. Using a method based on wavelets and light curves constructed from archival Rossi X-ray Timing Explorer observations, we extract a minimal timescale over the complete range of transitions for 4U 1608-52 during the 2002 and 2007 outbursts and the 1999 and 2000 outbursts for Aql X-1. We present evidence for a strong positive correlation between this minimal timescale and a similar timescale extracted from the corresponding power spectra of these sources.
Item Type: Article
Uncontrolled Keywords: methods: data analysis; stars: neutron; X-rays: binaries
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Ersin Göğüş
Date Deposited: 31 Aug 2022 09:42
Last Modified: 31 Aug 2022 09:42
URI: https://research.sabanciuniv.edu/id/eprint/43632

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