scholarly journals Observational Needs for Progress in Solar/Stellar Magnetic Activity: Overview

1983 ◽  
Vol 102 ◽  
pp. 499-502
Author(s):  
Robert W. Noyes
Keyword(s):  
Magnetic Activity ◽  
The Sun ◽  
Guiding Principle ◽  
Physical Mechanisms ◽  
Near Future ◽  
Major Progress ◽  
Important Progress ◽  
Stellar Magnetic Activity ◽  
The Way

Recent observational and theoretical findings have clarified the physical mechanisms which underlie magnetic activity production in stars, and point the way naturally to a number of new or more crisply defined questions, whose answers can lead to major progress in the near future. Concerning observational programs, a guiding principle has been evident throughout this symposium: We should rely heavily on the Sun for understanding the detailed physics of magnetic activity and its generation, while at the same time we study analogous stellar phenomena for comparison with the Sun, and for new insights and extension to different regions. I list below some broad observational areas in which conditions seem ripe for important progress in understanding solar and stellar magnetic activity, leaving to other summarizers the discussion of particular observational programs.

scholarly journals Starspots: signatures of stellar magnetic activity

2008 ◽  
Vol 4 (S259) ◽  
pp. 363-368 ◽  
Author(s):  
Klaus G. Strassmeier
Keyword(s):  
Imaging Techniques ◽  
Magnetic Behavior ◽  
Magnetic Activity ◽  
Stellar Surface ◽  
Late Type ◽  
Surface Features ◽  
Near Future ◽  
New Facilities ◽  
Stellar Magnetic Activity

AbstractStarspots, just as Sunspots, are among the most obvious tracers and signatures of stellar surface magnetic activity. Emphasized already several decades ago as the origin for the rotationally modulated brightness of cool late-type stars, it is just now that we start to trace individual surface features in great enough detail to understand their magnetic behavior and interaction. Starspots also became the most important “noise” for detecting extra-solar planets and could possibly be decisive when it comes to detect another Earth. Since this is not a review, and because indirect imaging techniques are covered in other papers in this volume, I focus in this paper on some specific detections of starspots and introduce four new facilities particularly suited for starspot research in the near future.

scholarly journals A review of the SCOSTEP’s 5-year scientific program VarSITI—Variability of the Sun and Its Terrestrial Impact

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Kazuo Shiokawa ◽  
Katya Georgieva
Keyword(s):  
Solar Wind ◽  
Interplanetary Space ◽  
Solar Wind Plasma ◽  
The Sun ◽  
Scientific Program ◽  
Solar Cycles ◽  
Grand Minimum ◽  
The Earth ◽  
Earth Connection ◽  
Near Future

AbstractThe Sun is a variable active-dynamo star, emitting radiation in all wavelengths and solar-wind plasma to the interplanetary space. The Earth is immersed in this radiation and solar wind, showing various responses in geospace and atmosphere. This Sun–Earth connection variates in time scales from milli-seconds to millennia and beyond. The solar activity, which has a ~11-year periodicity, is gradually declining in recent three solar cycles, suggesting a possibility of a grand minimum in near future. VarSITI—variability of the Sun and its terrestrial impact—was the 5-year program of the scientific committee on solar-terrestrial physics (SCOSTEP) in 2014–2018, focusing on this variability of the Sun and its consequences on the Earth. This paper reviews some background of SCOSTEP and its past programs, achievements of the 5-year VarSITI program, and remaining outstanding questions after VarSITI.

scholarly journals Antidiabetic Effects of Resveratrol: The Way Forward in Its Clinical Utility

2016 ◽  
Vol 2016 ◽  
pp. 1-14 ◽  
Author(s):  
Omolola R. Oyenihi ◽  
Ayodeji B. Oyenihi ◽  
Anne A. Adeyanju ◽  
Oluwafemi O. Oguntibeju
Keyword(s):  
Diabetes Mellitus ◽  
Clinical Utility ◽  
Therapeutic Agent ◽  
Molecular Targets ◽  
Therapeutic Agents ◽  
Mechanisms Of Action ◽  
Antidiabetic Drug ◽  
Near Future ◽  
Antidiabetic Effects ◽  
The Way

Despite recent advances in the understanding and management ofdiabetes mellitus, the prevalence of the disease is increasing unabatedly with resulting disabling and life-reducing consequences to the global human population. The limitations and side effects associated with current antidiabetic therapies have necessitated the search for novel therapeutic agents. Due to the multipathogenicity ofdiabetes mellitus,plant-derived compounds with proven multiple pharmacological actions have been postulated to “hold the key” in the search for an affordable, efficacious, and safer therapeutic agent in the treatment of the disease and associated complications. Resveratrol, a phytoalexin present in few plant species, has demonstrated beneficial antidiabetic effects in animals and humans through diverse mechanisms and multiple molecular targets. However, despite the enthusiasm and widespread successes achieved with the use of resveratrol in animal models ofdiabetes mellitus, there are extremely limited clinical data to confirm the antidiabetic qualities of resveratrol. This review presents an update on the mechanisms of action and protection of resveratrol indiabetes mellitus, highlights challenges in its clinical utility, and suggests the way forward in translating the promising preclinical data to a possible antidiabetic drug in the near future.

scholarly journals Photometric magnetic-activity metrics tested with the Sun: application toKeplerM dwarfs

2014 ◽  
Vol 4 ◽  
pp. A15 ◽  
Author(s):  
Savita Mathur ◽  
David Salabert ◽  
Rafael A. García ◽  
Tugdual Ceillier
Keyword(s):  
Magnetic Activity ◽  
The Sun

scholarly journals Anharmonic and standing dynamo waves: theory and observation of stellar magnetic activity

2006 ◽  
Vol 365 (1) ◽  
pp. 181-190 ◽  
Author(s):  
S. Baliunas ◽  
P. Frick ◽  
D. Moss ◽  
E. Popova ◽  
D. Sokoloff ◽  
...  
Keyword(s):  
Magnetic Activity ◽  
Dynamo Waves ◽  
Stellar Magnetic Activity

III—An Operator's View

1968 ◽  
Vol 21 (2) ◽  
pp. 207-220
Author(s):  
F. Ormonroyd
Keyword(s):  
High Rate ◽  
Flight Schedules ◽  
Near Future ◽  
The Way

It is abundantly clear that improvement in regularity and safety of operations in poor visibility can only come about through increased precision during the non-visual phase of the approach and missed approach and through continuing use of the instrument guidance to the lowest possible height within the prescribed limitations during the visual phase. In common with most other airlines, B.E.A. is planning to introduce Category II operations in the near future and this paper deals with some of the problems which we have met and the way in which we plan to tackle them.By virtue of being an exclusively short-haul airline, B.E.A. flight times are! short compared with time spent on the ground. As a result, flight schedules need to be closely integrated to provide a high rate of utilization of both aircraft and crews, and so any serious disruption of services by the weather affects B.E.A. to a greater extent than other airlines.

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