Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (47) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (4)
· Reads History
·
· Translate This Page
Title:
Millisecond variability of Cygnus X-1
Authors:
Meekins, J. F.; Wood, K. S.; Hedler, R. L.; Byram, E. T.; Yentis, D. J.; Chubb, T. A.; Friedman, H.
Affiliation:
AA(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC), AB(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC), AC(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC), AD(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC), AE(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC), AF(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC), AG(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 1, 1984, p. 288-297. (ApJ Homepage)
Publication Date:
03/1984
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Accretion Disks, Binary Stars, Black Holes (Astronomy), Cygnus Constellation, Variable Stars, X Ray Sources, Bursts, Heao 1, Shot Noise, Statistical Analysis, Time Measurement
DOI:
10.1086/161793
Bibliographic Code:
1984ApJ...278..288M

Abstract

The May 7, 1978 HEAO 1 spacecraft observations of Cygnus X-1 with a 10 microsec time resolution have revealed 3 ms variability, as well as a 300 ms component and features which extend to 6 s. Emission on time scales shorter than 1 s can be approximately modeled as a superposition of uncorrelated 3 ms and 300 ms shot contributions, both with peak luminosities near 10 to the 37th ergs/s, and with shot rates of about 10/s and 0.2/s, respectively. The 3 ms variability is consistent with the time scales expected for variability near the inner edge of a viscous accretion disk that surrounds a 10-solar mass black hole.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints