2 research outputs found
Detector Description and Performance for the First Coincidence Observations between LIGO and GEO
For 17 days in August and September 2002, the LIGO and GEO interferometer
gravitational wave detectors were operated in coincidence to produce their
first data for scientific analysis. Although the detectors were still far from
their design sensitivity levels, the data can be used to place better upper
limits on the flux of gravitational waves incident on the earth than previous
direct measurements. This paper describes the instruments and the data in some
detail, as a companion to analysis papers based on the first data.Comment: 41 pages, 9 figures 17 Sept 03: author list amended, minor editorial
change
Observing Dynamos in Cool Stars
The main aim of this paper is to introduce the most important observables
that help us to investigate stellar dynamos and compare those to the modeling
results. We give an overview of the available observational methods and data
processing techniques that are suitable for such purposes, with touching upon
examples of inadequate interpretations as well. Stellar observations are
compared to the solar data in such a way, which ensures that the measurements
are comparable in dimension, wavelength, and timescale. A brief outlook is
given to the future plans and possibilities. A thorough review of this topic
was published nearly a decade ago (Berdyugina 2005), now we focus on the
experience that have been gathered since that time.Comment: 47 pages, accepted for publication in Space Science Review