The Experts below are selected from a list of 47838 Experts worldwide ranked by ideXlab platform
Cheng Fang - One of the best experts on this subject based on the ideXlab platform.
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Sixty-Year Career in Solar Physics
Solar Physics, 2018Co-Authors: Cheng FangAbstract:This memoir reviews my academic career in Solar Physics for 60 years, including my research on non-LTE modeling, white-light flares, and small-scale Solar activities. Through this narrative, the reader can catch a glimpse of the development of Solar Physics research in mainland China from scratch. In the end, some prospects for future development are given.
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Recent progress of Solar Physics research in China
Research in Astronomy and Astrophysics, 2011Co-Authors: Cheng FangAbstract:Owing to the largely improved facilities and working conditions, Solar Physics research in China has recently shown marked development. This paper reports on the recent progress of Solar Physics research in Mainland China, mainly focusing on several hot issues, including instrumentations, magnetic field observations and research, Solar flares, filaments and their eruptions, coronal mass ejections and related processes, as well as active regions and the corona, small-scale phenomena, Solar activity and its predictions. A vision of the future is also described.
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Recent progress in Solar Physics made during the program of 2008 August 1st Solar total eclipse
Chinese Science Bulletin, 2010Co-Authors: Hongqi Zhang, Jun Lin, Mei Zhang, P. F. Chen, Cheng FangAbstract:The development of Solar Physics is presented from the program of 2008 total eclipse in China, including the presentations in the international workshop in this period and some observational results of the Solar eclipse.
T S Metcalfe - One of the best experts on this subject based on the ideXlab platform.
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the citation impact of digital preprint archives for Solar Physics papers
Solar Physics, 2006Co-Authors: T S MetcalfeAbstract:Papers that are posted to a digital preprint archive are typically cited twice as often as papers that are not posted. This has been demonstrated for papers published in a wide variety of journals, and in many different subfields of astronomy. Most astronomers now use the arXiv.org server (astro-ph) to distribute preprints, but the Solar Physics community has an independent archive hosted at Montana State University. For several samples of Solar Physics papers published in 2003, I quantify the boost in citation rates for preprints posted to each of these servers. I show that papers on the MSU archive typically have citation rates 1.7 times higher than the average of similar papers that are not posted as preprints, while those posted to astro-ph get 2.6 times the average. A comparable boost is found for papers published in conference proceedings, suggesting that the higher citation rates are not the result of self-selection of above-average papers.
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The Citation Impact of Digital Preprint Archives for Solar Physics Papers
Solar Physics, 2006Co-Authors: T S MetcalfeAbstract:Papers that are posted to a digital preprint archive are typically cited twice as often as papers that are not posted. This has been demonstrated for papers published in a wide variety of journals, and in many different subfields of astronomy. Most astronomers now use the arXiv.org server (astro-ph) to distribute preprints, but the Solar Physics community has an independent archive hosted at Montana State University. For several samples of Solar Physics papers published in 2003, I quantify the boost in citation rates for preprints posted to each of these servers. I show that papers on the MSU archive typically have citation rates 1.7 times higher than the average of similar papers that are not posted as preprints, while those posted to astro-ph get 2.6 times the average. A comparable boost is found for papers published in conference proceedings, suggesting that the higher citation rates are not the result of self-selection of above-average papers.Comment: 5 pages, 1 table, Solar Physics accepte
Nasa - One of the best experts on this subject based on the ideXlab platform.
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Solar Physics in the space age
2019Co-Authors: NasaAbstract:A concise and brief review is given of the Solar Physics' domain, and how its study has been affected by NASA Space programs which have enabled space based observations. The observations have greatly increased the knowledge of Solar Physics by proving some theories and challenging others. Many questions remain unanswered. To exploit coming opportunities like the Space Station, Solar Physics must continue its advances in instrument development, observational techniques, and basic theory. Even with the Advance Solar Observatory, other space based observation will still be required for the sure to be ensuing questions.
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The space shuttle payload planning working groups. Volume 5: Solar Physics
2013Co-Authors: NasaAbstract:The findings of the Solar Physics working group of the space shuttle payload planning activity are presented. The areas to be investigated by the Solar Physics experiments are: (1) the production of mechanical energy in the subphotospheric layers and its transport and dissipation in the upper layers of the atmosphere, (2) the mass flux from the subphotospheric layers into the chromosphere and corona and beyond the Solar wind, (3) Solar activity and its relationship to magnetic fields, and (4) the production of Solar flares. The approach to be followed in conducting the experiments and the equipment required are defined.
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Planetary atmospheric Physics and Solar Physics research
2013Co-Authors: NasaAbstract:An overview is presented on current and planned research activities in the major areas of Solar Physics, planetary atmospheres, and space astronomy. The approach to these unsolved problems involves experimental techniques, theoretical analysis, and the use of computers to analyze the data from space experiments. The point is made that the research program is characterized by each activity interacting with the other activities in the laboratory.
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Data catalog of satellite experiments. Supplement 2C: Astronomy and Solar Physics
2013Co-Authors: NasaAbstract:Each data set contained in this catalog lists spacecraft characteristics, experiment personnel, and a brief description of astronomy and Solar Physics experiments.
Stuart Mumford - One of the best experts on this subject based on the ideXlab platform.
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A Survey of Computational Tools in Solar Physics
Solar Physics, 2020Co-Authors: Monica G. Bobra, Stuart Mumford, Russell J. Hewett, Steven Christe, Kevin Reardon, Sabrina Savage, Jack Ireland, Tiago M. D. Pereira, Bin Chen, David Pérez-suárezAbstract:The SunPy Project developed a 13-question survey to understand the software and hardware usage of the Solar-Physics community. Of the Solar-Physics community, 364 members across 35 countries responded to our survey. We found that $99\pm 0.5$% of respondents use software in their research and 66% use the Python scientific-software stack. Students are twice as likely as faculty, staff scientists, and researchers to use Python rather than Interactive Data Language (IDL). In this respect, the astroPhysics and Solar-Physics communities differ widely: 78% of Solar-Physics faculty, staff scientists, and researchers in our sample uses IDL, compared with 44% of astroPhysics faculty and scientists sampled by Momcheva and Tollerud (2015). $63\pm 4$% of respondents have not taken any computer-science courses at an undergraduate or graduate level. We also found that most respondents use consumer hardware to run software for Solar-Physics research. Although 82% of respondents work with data from space-based or ground-based missions, some of which (e.g. the Solar Dynamics Observatory and Daniel K. Inouye Solar Telescope) produce terabytes of data a day, 14% use a regional or national cluster, 5% use a commercial cloud provider, and 29% use exclusively a laptop or desktop. Finally, we found that $73\pm 4$% of respondents cite scientific software in their research, although only $42\pm 3$% do so routinely.
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sunpy python for Solar Physics
Computational Science & Discovery, 2015Co-Authors: Stuart Mumford, Russell J. Hewett, Steven Christe, Jack Ireland, David Perezsuarez, A Y Shih, Andrew Inglis, Simon Liedtke, Florian MayerAbstract:This paper presents SunPy (version 0.5), a community-developed Python package for Solar Physics. Python, a free, cross-platform, general-purpose, high-level programming language, has seen widespread adoption among the scientific community, resulting in the availability of a large number of software packages, from numerical computation (NumPy, SciPy) and machine learning (scikit-learn) to visualization and plotting (matplotlib). SunPy is a data-analysis environment specializing in providing the software necessary to analyse Solar and heliospheric data in Python. SunPy is open-source software (BSD licence) and has an open and transparent development workflow that anyone can contribute to. SunPy provides access to Solar data through integration with the Virtual Solar Observatory (VSO), the HelioPhysics Event Knowledgebase (HEK), and the HELioPhysics Integrated Observatory (HELIO) webservices. It currently supports image data from major Solar missions (e.g., SDO, SOHO, STEREO, and IRIS), time-series data from missions such as GOES, SDO/EVE, and PROBA2/LYRA, and radio spectra from e-Callisto and STEREO/SWAVES. We describe SunPyʼs functionality, provide examples of Solar data analysis in SunPy, and show how Python-based Solar data-analysis can leverage the many existing tools already available in Python. We discuss the future goals of the project and encourage interested users to become involved in the planning and development of SunPy.
Alexei N. Peristykh - One of the best experts on this subject based on the ideXlab platform.
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RADIOCARBON CALIBRATION AND APPLICATION TO GEOPhysics, Solar Physics, AND ASTROPhysics
Radiocarbon, 2000Co-Authors: Paul E. Damon, Alexei N. PeristykhAbstract:This paper includes a brief history of the calibration of the radiocarbon time scale from the first recognition of the necessity of calibration in 1962 to INTCAL98. Thirty-six years of effort by dendrochronologists and the 14C community have pushed the tree-ring calibration back to 11,854 yr BP. All of this part of the calibration has been done by high-precision beta counting. Uranium-thorium (U-Th) dating of coral samples coupled with accelerator mass spectrometry (AMS) mea- surement of 14C has extended a fairly detailed calibration back beyond the Bolling warm episode to 15,000 BP. Earlier than 15,000 BP, piecewise linear approximation extends INTCAL98 calibration to 24,200 BP. Blending 1-, 2-, 3-, 10-, and 20-yr tree-ring samples containing regional and data offsets into a decadal time scale does not make an ideal error and bias free ∆14C record. Nevertheless, spectral analysis reveals some statistically significant fundamen- tal frequencies as well as interesting "beat" frequencies and the second harmonic of the around 208-yr cycle that is considered to be Solar in origin. Although, some very prominent peaks such as the 88-yr (Gleissberg) are clearly Solar in origin, some of the lower frequencies such as of the 512-yr period may have an origin in thermohaline circulation. Thus, INTCAL98 provides useful data for geophysical and Solar Physics research. Lastly, single year ∆14C analysis would be useful for revealing invalu- able information for Solar Physics, astroPhysics and geoPhysics not accessible by decadal data. We provide several examples. History of the Calibration of the Radiocarbon Time Scale
