English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Blocking low-eccentricity EMRIs: A statistical direct-summation N-body study of the Schwarzschild barrier

Brem, P., Amaro-Seoane, P., & Sopuerta, C. F. (2014). Blocking low-eccentricity EMRIs: A statistical direct-summation N-body study of the Schwarzschild barrier. Monthly Notices of the Royal Astronomical Society, 437(2), 1259-1267. doi:10.1093/mnras/stt1948.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-803D-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-803E-9
Genre: Journal Article

Files

show Files
hide Files
:
1211.5601.pdf (Preprint), 800KB
Name:
1211.5601.pdf
Description:
File downloaded from arXiv at 2016-05-26 07:20
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
MNRAS-2014_1259-67.pdf (Any fulltext), 317KB
Name:
MNRAS-2014_1259-67.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Brem, Patrick, Author
Amaro-Seoane, Pau1, Author              
Sopuerta, Carlos F., Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

Content

show
hide
Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc
 Abstract: The capture of a compact object in a galactic nucleus by a massive black hole (MBH), an extreme-mass ratio inspiral (EMRI), is the best way to map space and time around it. Recent work on stellar dynamics has demonstrated that there seems to be a complot in phase space acting on low-eccentricity captures, since their rates decrease significantly by the presence of a blockade in the rate at which orbital angular momenta change takes place. This so-called "Schwarzschild barrier" is a result of the impact of relativistic precession on to the stellar potential torques, and thus it affects the enhancement on lower-eccentricity EMRIs that one would expect from resonant relaxation. We confirm and quantify the existence of this barrier using a statistical sample of 2,500 direct-summation N-body simulations using both a post-Newtonian and also for the first time in a direct-summation code a geodesic approximation for the relativistic orbits. The existence of the barrier prevents low-eccentricity EMRIs from approaching the central MBH, but high-eccentricity EMRIs, which have been wrongly classified as "direct plunges" until recently, ignore the presence of the barrier, because they are driven by two-body relaxation. Hence, since the rates are significantly affected in the case of low-eccentricity EMRIs, we predict that a LISA-like observatory such as eLISA will predominantly detect high-eccentricity EMRIs.

Details

show
hide
Language(s):
 Dates: 2012-11-232014
 Publication Status: Published in print
 Pages: 10 pages, submitted
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1211.5601
DOI: 10.1093/mnras/stt1948
URI: http://arxiv.org/abs/1211.5601
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 437 (2) Sequence Number: - Start / End Page: 1259 - 1267 Identifier: ISSN: 1365-8711
CoNE: /journals/resource/1000000000024150