Magnetic Fields, Electromagnetism, bioelectricity, – Page 3 – My WordPress Site

experimental setup - Astrobiology via PubMed

Gravitational Biology, Magnetic Fields, Electromagnetism, bioelectricity,, Microbiology & Virology, Microgravity, Space Life Science

Impact of a High Magnetic Field on the Orientation of Gravitactic Unicellular Organisms

by Keith CowingSeptember 12, 2025September 12, 2025

The Aurora Australis, photographed over Concordia station in July 2025, during the ongoing solar activity maximum, the peak of the Sun's 11-year cycle. ESA - Larger image

Analog Studies, Arctic / Antarctic / Alpine, Astronomy & Telescopes, Away Teams & Field Reports, Exploration Gear & Tech, Icy Worlds, Magnetic Fields, Electromagnetism, bioelectricity,, People Of Astrobiology, Polar / Alpine Expeditions, Space Weather & Heliophysics

Antarctic Offworld Analog: Aurora Australis Over Concordia Station

by Keith CowingAugust 22, 2025August 22, 2025

Maximum predicted emission frequency and radio flux density for known exoplanets (triangle symbols; data from [8]). The uncertainties on the predictions are estimated to one order of magnitude for the flux density and a factor of 2-3 for the emission frequency12. The sensitivities for the ground-based (UTR-2, LOFAR, NenuFAR, SKA-Low, VLA, GMRT) and space-based (FARSIDE, LCRT, FARVIEW ) radio telescopes are labeled (for 10 min of integration time and a bandwidth of 24 MHz). The FARVIEW and LCRT sensitivity curves are taken from [19] and [2], respectively. The LuSEE-Night sensitivity curve is averaged over the entire two-year mission and includes post-processing using a LombScargle periodogram (see text for details). The possible detection of τ Boo b from LOFAR23 is shown as a red star. This figure is adapted from [9]. -- astro-ph.IM

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Magnetic Fields, Electromagnetism, bioelectricity,

Studying Exoplanets In The Radio From The Moon

by Keith CowingAugust 14, 2025August 14, 2025

Stellar flares observed in JWST/NIRISS time-series spectroscopy of TRAPPIST-1. Each column shows one flare event during transits of the TRAPPIST-1c or TRAPPIST-1f planets. Tow row: Light curves with the total flux (integrated over the full spectral range and normalized to the mean out-of-transit flux). Colored points indicate pre-flare (green), flare (orange), maximum flare light (red), and post-flare (blue) phases. Green and blue dashed lines mark the average pre- and post-flare flux levels. Middle row: Light curves of the normalized Hα flux. Bottom row: Time-resolved spectrograms (wavelength vs. time) normalized to the pre-flare spectrum. The shaded blue region shows the drop in flux caused by the planetary transit. For comparison, the time axis in all panels are aligned such that t = 0 corresponds to the beginning of the maximum flare light phase. In all four events, the total flux in the post-flare phase is systematically elevated relative to the pre-flare level. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Magnetic Fields, Electromagnetism, bioelectricity,, Radiation, Space Weather & Heliophysics, TRAPPIST-1

Flares On TRAPPIST-1 Reveal The Spectrum Of Magnetic Features On Its Surface

by Keith CowingAugust 8, 2025August 8, 2025

(a) Equatorial section of ur and (b) azimuthal section of uϕ showing a typical flow pattern for the metallic core-silicate magma ocean system for the default model D. -- astro-ph.EP

Astrogeology, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Radiation

Can A Convecting Magma Ocean Offer A Solution To The Puzzling Case Of Core Convection In Early Earth?

by Keith CowingAugust 2, 2025

Left: The known exoplanet population (divided into two bins of masses above and below 10 Earth masses) as a function of their semi-major axis and of the central stellar mass. The classical habitable zone is shown by the blue area, and the region where star-planet magnetic interactions (SPMI) are expected to occur is shown by the red area, i.e. within the so-called Alfven surface. Right: Modelling of the wind of HD 189733 based on a spectropolarimetric map ( ´ Fares et al. 2017) showing the magnetic connectivity between the hot Jupiter HD 189733 b and its host (from Strugarek et al. 2022). -- astro-ph.IM

Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Magnetic Fields, Electromagnetism, bioelectricity,

Detecting And Characterising The Magnetic Field Of Exoplanets

by Keith CowingJuly 7, 2025July 7, 2025

The solar wind flows around Earth's magnetic field. A new NASA study suggests that the amount of oxygen in the atmosphere and strength of the magnetic field have been correlated for more than half a billion years. NASA's Goddard Space Flight Center/Conceptual Image Laboratory

Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Imaging & Spectroscopy, Magnetic Fields, Electromagnetism, bioelectricity,, Space Weather & Heliophysics

Connections Have Been Discovered Between Earth’s Oxygen And Its Magnetic Field

by Keith CowingJune 20, 2025June 20, 2025

This colorful web of wispy gas filaments is the Vela Supernova Remnant, an expanding nebula of cosmic debris left over from a massive star that exploded about 11,000 years ago. Credit: CTIO/NOIRLab/DOE/NSF/AURA Image Processing: T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), M. Zamani & D. de Martin (NSF NOIRLab) Larger image

Astrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Extinction events, Habitable Zones, Imaging & Spectroscopy, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, Radiation

Supernovae May Have Kicked Off Abrupt Climate Shifts In The Past, And They Could Again

by Keith CowingJune 18, 2025June 18, 2025

The location of magnetic nulls and separators for right- a tidally locked planet, and left- a fast-rotating planet (10 hours rotation period). The scale and size of Earth’s magnetosphere are consistent across both panels in the figure. -- astro-ph.EP

Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Space Weather & Heliophysics

Impacts Of Tidal Locking On Magnetospheric Energy Input To Exoplanet Atmospheres

by Keith CowingMay 23, 2025May 23, 2025

A cryo-electron microscopy (cryo-EM) structure of Photosystem I isolated from the bacterium Anthocerotibacter panamensis. -- Credit Han-Wei Jiang et al./PNAS.

Astropharmacy / Biotechnology, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Magnetic Fields, Electromagnetism, bioelectricity,, Microbiology & Virology, Nanotechnology & SynBio, Origin & Evolution of Life

Light-to-electricity Nanodevice Reveals How Earth’s Oldest Surviving Cyanobacteria Worked

by Keith CowingMay 16, 2025May 16, 2025