Results 21 to 30 of about 1,555,580 (293)
Optical recombination lines as probes of conditions in planetary nebulae [PDF]
Proceedings of the International Astronomical Union, 2006 Since the last IAU symposium on planetary nebulae (PNe), several deep spectroscopic surveys of the relatively faint optical recombination lines (ORLs) emitted by heavy element ions in PNe and H II regions have been completed.
Xiaowei Liu
semanticscholar +1 more source
Observational Evidence for the Origin of Repetitive Chorus Emissions
Geophysical Research Letters, 2022 Chorus waves, discovered as a series of repetitive coherent emissions, are well known for producing hazard radiation environments in Earth's magnetosphere.
Xinliang Gao +5 more
doaj +1 more source
Planetary Nebulae as Probes of Dark Matter in NGC 3384 [PDF]
, 1995 We have obtained radial velocities of 68 planetary nebulae surrounding the SB0 galaxy NGC 3384 in the Leo I group, using the CTIO 4 m telescope and the Rutgers Fabry-Perot interferometer.
Tremblay Benoit, D. Merritt, T. Williams
semanticscholar +1 more source
MHD‐Test Particles Simulations of Moderate CME and CIR‐Driven Geomagnetic Storms at Solar Minimum
Space Weather, 2021 As part of the Whole Heliosphere and Planetary Interactions initiative, contrasting drivers of radiation belt electron response at solar minimum have been investigated with MHD‐test particle simulations for the May 13–14, 2019 Coronal Mass Ejection (CME)‐
Mary K. Hudson +8 more
doaj +1 more source
Galaxies, 2022 Planetary Nebulae (PNe) that are physical members of Galactic open clusters are powerful probes that allow precise determination of their distance and crucially their initial mass on the main sequence.
Vasiliki Fragkou +5 more
doaj +1 more source
Science Objectives and Rationale for the Radiation Belt Storm Probes Mission
Space Science Reviews, 2012 The NASA Radiation Belt Storm Probes (RBSP) mission addresses how populations of high energy charged particles are created, vary, and evolve in space environments, and specifically within Earth’s magnetically trapped radiation belts. RBSP, with a nominal
B. Mauk +5 more
semanticscholar +1 more source
Probing dust settling in proto-planetary discs with ALMA [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 Investigating the dynamical evolution of dust grains in proto-planetary disks is a key issue to understand how planets should form. We identify under which conditions dust settling can be constrained by high angular resolution observations at mm wavelengths, and which observational strategies are suited for such studies.
Boehler, Y. +3 more
openaire +7 more sources
Gravity Imaging Radio Observer (GIRO) for Planetary Science and Mission Opportunities
The Planetary Science JournalThe Gravity Imaging Radio Observer (GIRO) is a concept for a high-performance, battery-powered radio probe designed to be released in the proximity of a target planetary body to study its gravitational variations.
R. S. Park +14 more
doaj +1 more source
Responding to a Weeping Planet: Practical Theology as a Discipline Called by Crisis
Religions, 2022 Practical theology is by nature a discipline of crisis, standing on the edge of reality and potential, what is and what can be. Crises can be gentle turning points, opportunities for radical transformation, or catastrophic moments in time.
Mary Elizabeth Moore
doaj +1 more source
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source