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2021MNRAS.502L..72M - Mon. Not. R. Astron. Soc., 502, L72-L78 (2021/March-3)

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

MOHAMED K., SONBAS E., DHUGA K.S., GOGUS E., TUNCER A., ABD ALLAH N.N. and IBRAHIM A.

Abstract (from CDS):

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.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): methods: data analysis - stars: neutron - X-rays: binaries

Errata: erratum vol. 507, p. L29 (2021)

Simbad objects: 3

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