A state-dependent influence of the type-I bursts on the accretion in 4U 1608--52?

Abstract

We investigated the possible feedback of type-I burst to the accretion process during the spectral evolution of the atoll source 4U 1608--52. By fitting the burst spectrum with a blackbody and an adjustable, persistent spectral component, we found that the latter is significant state-dependent. In the banana state the persistent flux increases along the burst evolution, while in the island state this trend holds only when the bursts are less luminous and starts to reverse at higher burst luminosities. We speculate that, by taking into account both the Poynting-Robertson drag and radiation pressure, these phenomena may arise from the interactions between the radiation field of the type-I burst and the inner region of the accretion disc.

arXiv comment10 pages, 5 figures, accepted by ApJ Letter

References in corpus (16)

• Towards a unified model for black hole X-ray binary jets
• Advection-Dominated Accretion and the Spectral States of Black Hole X-Ray Binaries: Application to Nova Muscae 1991
• Thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer
• Photospheric radius expansion X-ray bursts as standard candles
• Thermonuclear burst oscillations
• When A Standard Candle Flickers
• Evidence for accretion rate change during type I X-ray bursts
• X-ray bursting neutron star atmosphere models: spectra and color corrections
• X-ray bursting neutron star atmosphere models using an exact relativistic kinetic equation for Compton scattering
• The effect of accretion on the measurement of neutron star mass and radius in the low-mass X-ray binary 4U 1608-52
• The X-ray spectrum of the atoll source 4U 1608-52
• A bright thermonuclear X-ray burst simultaneously observed with Chandra and RXTE
• First superburst from a classical low-mass X-ray binary transient
• Reflection spectra from an accretion disc illuminated by a neutron star X-ray burst
• Escape, capture, and levitation of matter in Eddington outbursts
• Probing X-ray burst -- accretion disk interaction in low mass X-ray binaries through kilohertz quasiperiodic oscillations

Cited by in corpus (14)

• Accretion disks and coronae in the X-ray flashlight
• Gravitational Lensing of Rays through the Levitating Atmospheres of Compact Objects
• Insight-HXMT observations of 4U~1636-536: Corona cooling revealed with single short type-I X-ray burst
• NICER observes a secondary peak in the decay of a thermonuclear burst from 4U 1608-52
• Probing the effects of a thermonuclear X-ray burst on the neutron star accretion flow with NuSTAR
• Simulating the Collapse of a Thick Accretion Disk due to a Type I X-ray Burst from a Neutron Star
• Basic parameters of the helium accreting X-ray bursting neutron star in 4U 1820-30
• Diagnosing the burst influence upon accretion in the clocked burster GS 1826--238
• Burst-Disk Interaction in 4U 1636-536 as observed by NICER
• Variable spreading layer in 4U 1608-52 during thermonuclear X-ray bursts in the soft state
• Insight-HXMT observations on thermonuclear X-ray bursts from 4U~1608--52 in 2022: the accretion rate dependent anisotropy of burst emission
• Return of 4U~1730--22 after 49 years silence: the peculiar burst properties of the 2021/2022 outbursts observed by Insight-HXMT
• Insight-HXMT observations on thermonuclear X-ray bursts from 4U~1608--52 in the low/hard state: the energy-dependant hard X-ray deficit and cooling saturation of the corona
• The X-ray bursts within the 2010 outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021