Please note that eDoc will be permanently shut down in the first quarter of 2021!      Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Radioastronomie     Collection: Publikationen des MPI für Radioastronomie     Display Documents



  history
ID: 11060.0, MPI für Radioastronomie / Publikationen des MPI für Radioastronomie
A very rapid extreme scattering event in the IDV source 0954+658
Authors:Cimò, G.; Beckert, T.; Krichbaum, T. P.; Fuhrmann, L.; Kraus, A.; Witzel, A.; Zensus, J. A.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Publications of the Astronomical Society of Australia
Journal Abbrev.:Publ. Astron. Soc. Aust.
Volume:19
Issue / Number:1
Start Page:10
End Page:13
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Extreme scattering events (ESEs) are dramatic variations of the flux density at gigahertz frequencies caused by ray path distortions within an isolated inhomogeneity (`plasma lens') in the interstellar medium. These events are characterised by a deep flux density minimum in the light curve with, in some cases, surrounding maxima. The variability time scales range from weeks to months. These phenomena show a strong frequency dependence, in which the variability amplitudes increase with wavelength. During an intraday variability (IDV) monitoring project (March 2000), a feature resembling an ESE-like event appeared in the variable light curve of 0954 + 658, however with a time scale of less than two days. We will discuss this effect and its implications for a better description of the interstellar medium.
Free Keywords:quasars : individual (0954+658); ISM : structure
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Radioastronomie
External Affiliations:Max Planck Inst Radioastron, Hugel 69, D-5300 Bonn, Germany; Max Planck Inst Radioastron, D-5300 Bonn, Germany
Identifiers:ISI:000176482500003
ISSN:1323-3580
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.