A5049837511- Solar and Space Plasma Dynamics
- Solar Radiation and Photovoltaics
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Geomagnetism and Paleomagnetism Studies
- Stellar, planetary, and galactic studies
- Geophysics and Gravity Measurements
- Solar Thermal and Photovoltaic Systems
- Scientific Research and Discoveries
- Astronomical Observations and Instrumentation
- Space exploration and regulation
- Energy Load and Power Forecasting
- Big Data Technologies and Applications
- Economic and Technological Developments in Russia
- Environmental Impact and Sustainability
- Market Dynamics and Volatility
- Media Influence and Politics
- Inertial Sensor and Navigation
- Photonic Crystal and Fiber Optics
- Distributed and Parallel Computing Systems
- Spaceflight effects on biology
- CCD and CMOS Imaging Sensors
- Flow Measurement and Analysis
- Adversarial Robustness in Machine Learning
- Spectroscopy and Laser Applications
University of New Hampshire
2020-2023
University of New Hampshire at Manchester
2019-2023
Space Science Institute
2014-2023
Southwest Research Institute
2013-2014
Stanford University
2004
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control structure dynamics of Sun its atmosphere. first-light DKIST images, released publicly on 29 January 2020, only hint at extraordinary capabilities which accompany full commissioning five facility instruments. With this Critical Science Plan (CSP) we attempt anticipate some what those enable, providing a snapshot scientific pursuits hopes engage...
We present the stray-light point-spread functions (PSFs) and their inverses we characterized for Atmospheric Imaging Assembly (AIA) EUV telescopes on board Solar Dynamics Observatory (SDO) spacecraft. The inverse kernels are approximate under convolution. Convolving original Level 1 images with them produces improved characteristics. demonstrate usefulness of these PSFs by applying to two specific cases: photometry differential emission measure (DEM) analysis. consist a narrow Gaussian core,...
A series of solar energetic particle (SEP) events were observed at Parker Solar Probe (PSP) by the Integrated Science Investigation Sun (\ISOIS) during period from April 18, 2019 through 24, 2019. The PSP spacecraft was located near 0.48 au on spiral field lines that projected out to 1 within $\sim 25^\circ$ Earth spacecraft. These SEP events, though small compared historically large amongst largest thus far in mission and provide critical information about space environment inside events....
Abstract Magnetic switchbacks are of continuing interest to the scientific community because phenomenon has not been completely understood. Although most research into them in Parker Solar Probe era largely focused on creating a theoretical framework for causing field reversal through magnetic interchange reconnection, reconnecting streams plasma solar wind, or shear driven turbulence, it remains unclear as what extent these models may represent underlying physical reality switchbacks. In...
We have carried out a comparative study of the predicted solar wind based on flux tube expansion factor computed using current sheet source surface (CSSS) model and potential field (PFSS) model, with aim determining whether CSSS represents sources better than PFSS model. For this, we obtained root mean square errors (RMSEs) correlation coefficients between observed speed that by models, ratio RMSEs two skill score. On average, predictions are more accurate 1.6, taking RMSE as metric...
ABSTRACT This Letter presents the results of an investigation into controlling influence large-scale magnetic field Sun in determining solar wind outflow using two magnetostatic coronal models: current sheet source surface (CSSS) and potential surface. For this, we made use Wang Sheeley inverse correlation between flux expansion rate (FTE) observed speed (SWS) at 1 au. During period study, extended over cycle 23 beginning 24, found that coefficients fitted quadratic equation representing...
Abstract A solar energetic particle event was detected by the Integrated Science Investigation of Sun (IS⊙IS) instrument suite on Parker Solar Probe ( PSP ) 2019 April 4 when spacecraft inside 0.17 au and less than 1 day before its second perihelion, providing an opportunity to study acceleration transport unprecedentedly close source. The very small, with peak MeV proton intensities ∼0.3 particles (cm 2 sr s MeV) −1 , undetectable above background levels at energies 10 or in detectors au....
In the domain of space science, numerous ground-based and space-borne data various phenomena have been accumulating rapidly, making analysis scientific interpretation challenging. However, recent trends in application artificial intelligence (AI) shown to be promising extraction information or knowledge discovery from these extensive sets. Coincidentally, preparing for use as inputs AI algorithms, referred AI-readiness, is one outstanding challenges leveraging science. Preparation AI-ready...
An inverse correlation has been found to exist between the magnetic flux tube expansion factor (FTE) at source surface and solar wind speed (SWS) observed Earth, which made use of in prediction near Earth with reasonable accuracy. However, FTE is not always consistently high, discrepancies predicted SWS are quite significant. There several factors causing this discrepancy. The present work an investigation such estimation error caused by them. We that number multipole components included...
Magnetic switchbacks are of continuing interest to the scientific community due fact that phenomenon has not been completely understood. Although most research into them in Parker Solar Probe era largely focused on creating a theoretical framework for causing field reversal through magnetic interchange reconnection, reconnecting streams plasma solar wind, or shear driven turbulence, it remains unclear what extent these models may represent underlying physical reality switchbacks. In this...
Although recent research suggests a link in support of model switchback formation the solar corona via interchange reconnection that is propagated outward with wind and similarities their ion composition to plasma instability produced plasmoids, these instabilities have yet be observationally linked magnetic switchbacks. In this paper we aim use theoretical framework twin coronal mass ejection event which known include processes compare experimental observations using Parker Solar Probe...
Extended human presence beyond low-Earth orbit (BLEO) during missions to the Moon and Mars will pose significant challenges in near future. A primary health risk associated with these is radiation exposure, primarily from galatic cosmic rays (GCRs) solar proton events (SPEs). While GCRs present a more consistent, albeit modulated threat, SPEs are harder predict can deliver acute doses over short periods. Currently NASA utilizes analytical tools for monitoring space environment order make...
Whitepaper #325 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional ground-based missions/projects; research/applications/operations pipeline; solar physics; […]
In preparation for the approaching Heliophysics Decadal Survey, a group of space weather experts and enthusiasts took on an effort to coordinate community-wide action white paper preparations.