Satellite Measured Ionospheric Magnetic Field Variations over Natural Hazards Sites
Remote Sensing, 2021 Processes and threats related to natural hazards play an important role in the evolution of the Earth and in human history. The purpose of this study is to investigate magnetic field variations measured at low Earth orbit (LEO) altitudes possibly ...
Christoph Schirninger +14 more
doaj +2 more sources
Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg [PDF]
The Astrophysical Journal LettersThe consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum.
Travis S. Metcalfe +13 more
doaj +2 more sources
Journal of Space Weather and Space ClimateClimatological models of non-polar geomagnetic daily variations are valuable tools for applications ranging from studying ionospheric current systems to correcting magnetic field survey data.
Chulliat Arnaud +4 more
doaj +2 more sources
Magnetic Fields in a Sample of Planet-hosting M Dwarf Stars from Kepler, K2, and TESS Observed by APOGEE [PDF]
The Astrophysical JournalStellar magnetic fields have a major impact on space weather around exoplanets orbiting low-mass stars. From an analysis of Zeeman-broadened Fe i lines measured in near-infrared SDSS/APOGEE spectra, mean magnetic fields are determined for a sample of 29 ...
Fábio Wanderley +10 more
doaj +2 more sources
Magnetic Activities of AD Leonis: Flares in TESS Data and Optical Spectra
The Astrophysical JournalWe studied the flaring activities of M4.5 dwarf AD Leo to understand its stellar atmospheres and magnetic activities. We present new observational results on this highly active star, using nonsimultaneous measurement of Transiting Exoplanet Survey ...
Diya Ram +4 more
doaj +2 more sources
A Survey of 3D Indoor Localization Systems and Technologies
Sensors, 2022 Indoor localization has recently and significantly attracted the interest of the research community mainly due to the fact that Global Navigation Satellite Systems (GNSSs) typically fail in indoor environments.
Andrey Sesyuk +2 more
doaj +2 more sources
Remote SensingThis paper represents the results of ten years of monitoring using satellite imagery and aerial reconnaissance, followed by in-depth analysis utilizing LiDAR data and geomagnetic prospection techniques of the first two Neolithic rondels detected in ...
Rajna Šošić Klindžić +2 more
doaj +2 more sources
Magnetic Activities of Wolf 359: Starspot Distribution and Quasiperiodic Pulsation Using TESS Data
The Astrophysical JournalWolf 359 is the fifth closest (∼2.4 pc) star to Earth and a candidate exoplanet-hosting M6 dwarf. We studied the distribution of starspots and flaring activities of Wolf 359 to understand its stellar atmosphere and magnetic activities.
Diya Ram +3 more
doaj +2 more sources
On the Characterization of GJ 504: A Magnetically Active Planet-host Star Observed by the Transiting Exoplanet Survey Satellite (TESS) [PDF]
Astrophysical Journal, 2022 We present the results of the analysis of the photometric data collected in long- and short-cadence mode by the Transiting Exoplanet Survey Satellite for GJ 504, a well-studied planet-hosting solar-like star, whose fundamental parameters have been ...
M. D. Di Mauro +13 more
semanticscholar +1 more source
Transiting Exoplanet Survey Satellite (TESS) Observations of Flares and Quasi-Periodic Pulsations from Low-Mass Stars and Potential Impact on Exoplanets [PDF]
Solar Physics, 2021 We have performed a search for flares and quasi-periodic pulsations (QPPs) from low-mass M-dwarf stars using Transient Exoplanet Survey Satellite (TESS) two-minute cadence data. We find seven stars that show evidence of QPPs.
G. Ramsay +3 more
semanticscholar +1 more source