English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  On the development of quasi-periodic oscillations in Bondi–Hoyle accretion flows

Dönmez, O., Zanotti, O., & Rezzolla, L. (2011). On the development of quasi-periodic oscillations in Bondi–Hoyle accretion flows. Monthly Notices of the Royal Astronomical Society, 412(3), 1659-1668. doi:10.1111/j.1365-2966.2010.18003.x.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-089E-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-089F-A
Genre: Journal Article
Other : On the development of QPOs in Bondi-Hoyle accretion flows (Preprint)

Files

show Files
hide Files
:
1010.1739 (Preprint), 699KB
Name:
1010.1739
Description:
File downloaded from arXiv at 2012-01-17 10:04
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
MNRAS412_1659.pdf (Any fulltext), 14MB
Name:
MNRAS412_1659.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Dönmez, Orhan, Author
Zanotti, Olindo, Author
Rezzolla, Luciano1, Author              
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

Content

show
hide
Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc
 Abstract: The numerical investigation of Bondi-Hoyle accretion onto a moving black hole has a long history, both in Newtonian and in general-relativistic physics. By performing new two-dimensional and general-relativistic simulations onto a rotating black hole, we point out a novel feature, namely, that quasi-periodic oscillations (QPOs) are naturally produced in the shock cone that develops in the downstream part of the flow. Because the shock cone in the downstream part of the flow acts as a cavity trapping pressure perturbations, modes with frequencies in the integer ratios 2:1 and 3:1 are easily produced. The frequencies of these modes depend on the black-hole spin and on the properties of the flow, and scale linearly with the inverse of the black-hole mass. Our results may be relevant for explaining the detection of QPOs in Sagittarius A*, once such detection is confirmed by further observations. Finally, we report on the development of the flip-flop instability, which can affect the shock cone under suitable conditions; such an instability has been discussed before in Newtonian simulations but was never found in a relativistic regime.

Details

show
hide
Language(s):
 Dates: 2010-10-082011-04-112011
 Publication Status: Published in print
 Pages: 11 pages, 7 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1010.1739
DOI: 10.1111/j.1365-2966.2010.18003.x
URI: http://arxiv.org/abs/1010.1739
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Monthly Notices of the Royal Astronomical Society
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: 412 (3) Sequence Number: - Start / End Page: 1659 - 1668 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150