Models of quasi-periodic variability in neutron stars and black holes

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Black holes and weakly-magnetic accreting neutron stars show strong quasi-periodic variability over timescales that span a very wide range. This property offer us a unique opportunity to improve our understanding of basic physical processes in strong gravitational fields as it reveals, for the first time, phenomena that occur on the most fundamental timescales near accreting compact objects. In this article, I review our current understanding of the variability properties of accretion flows into neutron stars and black holes. I discuss a number of challenges faced by theoretical models, in order to identify open questions in accretion physics that need to be addressed. Finally, I discuss the relation to and implications for variability models of the detection of nearly coherent oscillations during type I X-ray bursts in several neutron-star sources.

Original languageEnglish (US)
Pages (from-to)481-491
Number of pages11
JournalAdvances in Space Research
Volume28
Issue number2-3
DOIs
StatePublished - Jul 2001
Externally publishedYes

Fingerprint

neutron stars
Stars
Neutrons
accretion
timescale
magnetic stars
physics
oscillation
gravitational fields
bursts
Physics
X rays
oscillations
x rays
physical process
detection

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Models of quasi-periodic variability in neutron stars and black holes. / Psaltis, Dimitrios.

In: Advances in Space Research, Vol. 28, No. 2-3, 07.2001, p. 481-491.

Research output: Contribution to journalArticle

@article{cf6f1aeca8e94ca495f4653d4d59febe,
title = "Models of quasi-periodic variability in neutron stars and black holes",
abstract = "Black holes and weakly-magnetic accreting neutron stars show strong quasi-periodic variability over timescales that span a very wide range. This property offer us a unique opportunity to improve our understanding of basic physical processes in strong gravitational fields as it reveals, for the first time, phenomena that occur on the most fundamental timescales near accreting compact objects. In this article, I review our current understanding of the variability properties of accretion flows into neutron stars and black holes. I discuss a number of challenges faced by theoretical models, in order to identify open questions in accretion physics that need to be addressed. Finally, I discuss the relation to and implications for variability models of the detection of nearly coherent oscillations during type I X-ray bursts in several neutron-star sources.",
author = "Dimitrios Psaltis",
year = "2001",
month = "7",
doi = "10.1016/S0273-1177(01)00418-5",
language = "English (US)",
volume = "28",
pages = "481--491",
journal = "Advances in Space Research",
issn = "0273-1177",
publisher = "Elsevier Limited",
number = "2-3",

}

TY - JOUR

T1 - Models of quasi-periodic variability in neutron stars and black holes

AU - Psaltis, Dimitrios

PY - 2001/7

Y1 - 2001/7

N2 - Black holes and weakly-magnetic accreting neutron stars show strong quasi-periodic variability over timescales that span a very wide range. This property offer us a unique opportunity to improve our understanding of basic physical processes in strong gravitational fields as it reveals, for the first time, phenomena that occur on the most fundamental timescales near accreting compact objects. In this article, I review our current understanding of the variability properties of accretion flows into neutron stars and black holes. I discuss a number of challenges faced by theoretical models, in order to identify open questions in accretion physics that need to be addressed. Finally, I discuss the relation to and implications for variability models of the detection of nearly coherent oscillations during type I X-ray bursts in several neutron-star sources.

AB - Black holes and weakly-magnetic accreting neutron stars show strong quasi-periodic variability over timescales that span a very wide range. This property offer us a unique opportunity to improve our understanding of basic physical processes in strong gravitational fields as it reveals, for the first time, phenomena that occur on the most fundamental timescales near accreting compact objects. In this article, I review our current understanding of the variability properties of accretion flows into neutron stars and black holes. I discuss a number of challenges faced by theoretical models, in order to identify open questions in accretion physics that need to be addressed. Finally, I discuss the relation to and implications for variability models of the detection of nearly coherent oscillations during type I X-ray bursts in several neutron-star sources.

UR - http://www.scopus.com/inward/record.url?scp=0035402041&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035402041&partnerID=8YFLogxK

U2 - 10.1016/S0273-1177(01)00418-5

DO - 10.1016/S0273-1177(01)00418-5

M3 - Article

AN - SCOPUS:0035402041

VL - 28

SP - 481

EP - 491

JO - Advances in Space Research

JF - Advances in Space Research

SN - 0273-1177

IS - 2-3

ER -