A Minimal Timescale for the Continuum in 4U 1608-52 and Aql X-1
High Energy Astrophysical Phenomena
2021-01-20 v1
Abstract
Similar to black-hole X-ray binary (BHXRB) transients, hysteresis-like state transitions are also seen in some neutron-star X-ray binaries (NSXRBs). Using a method based on wavelets and lightcurves constructed from archival RXTE 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.
Keywords
Cite
@article{arxiv.2101.04201,
title = {A Minimal Timescale for the Continuum in 4U 1608-52 and Aql X-1},
author = {K. Mohamed and E. Sonbas and K. S. Dhuga and E. Göğüş and A. Tuncer and N. N. Abd Allah and A. Ibrahim},
journal= {arXiv preprint arXiv:2101.04201},
year = {2021}
}
Comments
Accepted for publication in MNRAS. arXiv admin note: text overlap with arXiv:2009.09812