Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.2003m&link_type=abstract
American Astronomical Society, SPD meeting #34, #20.03; Bulletin of the American Astronomical Society, Vol. 35, p.844
Astronomy and Astrophysics
Astrophysics
Scientific paper
In soft X-rays the solar coronal radiance varies by a factor of 70 over the solar activity cycle. A similar variation in most stars in the existing X-ray database has not been found (Stern 2001); even stars which exhibit chromospheric activity cycles show only marginal evidence for X-ray cycles. This is rather puzzling as the time span and multiple coverage of the X-ray sky should reveal at least a hint of such a pronounced cyclical variation.
By the time of the meeting we will have submitted a SMEX proposal with the above acronym to determine the nature and amplitude of the variation in X-ray emission of nearby solar analogs that have a cyclic chromospheric Ca-K variability similar to that of the Sun. In doing so we aim to expand our knowledge of the parameter space of stellar dynamos, which will lead to a better understanding of the dynamo process in general -- an unresolved fundamental problem in astrophysics -- and the solar dynamo in particular. This is an investigation at the cross-section of the NASA themes ``Structure and Evolution of the Universe", and the ``Sun-Earth Connection".
In my presentation I will describe the SADE instrument design, observing strategy, and possible science results. SADE is proposed by a consortium led by MSU, including Swales, CfA, LMSAL, UCL, OAP, and Bangalore.
No associations
LandOfFree
SADE: Starspot and Dynamo Explorer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with SADE: Starspot and Dynamo Explorer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SADE: Starspot and Dynamo Explorer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-988471