Results 31 to 40 of about 126 (111)
2005–2010 Multiwavelength Campaing of OJ287
Acta Polytechnica, 2011 The light curve of quasar OJ287 extends from 1891 up today without major gaps. This is partly due to extensive studies of historical plate archives by Rene Hudec and associates, and partly due to several observing campaigns in recent times.
M. Valtonen, A. Sillanpää
doaj
Waves and Instabilities in Saturn's Magnetosheath: 2. Dispersion Relation Analysis
Journal of Geophysical Research: Space Physics, Volume 129, Issue 10, October 2024.Abstract The WHAMP (Rönnmark, 1982, https://inis.iaea.org/search/search.aspx?orig_q=RN:14744092) and LEOPARD (Astfalk & Jenko, 2017, https://doi.org/10.1002/2016ja023522) dispersion relation solvers were used to evaluate the growth rate and scale size for mirror mode (MM) and ion cyclotron (IC) instabilities under plasma conditions resembling Saturn's ...
I. Cheng +4 more
wiley +1 more source
Atmospheric collection of extraterrestrial dust at the Earth's surface in the mid‐Pacific
Meteoritics &Planetary Science, Volume 59, Issue 10, Page 2789-2817, October 2024.Abstract The Kwajalein micrometeorite collection utilized high volume air samplers fitted with polycarbonate membrane filters to capture particles directly from the atmosphere at the Earth's surface. This initial study focused on identifying cosmic spherule‐like particles, conservatively categorizing them into four groups based on bulk compositional ...
Penelope J. Wozniakiewicz +8 more
wiley +1 more source
Explaining the Evolution of Ion Velocity Distributions at a Low Activity Comet
Journal of Geophysical Research: Space Physics, Volume 129, Issue 9, September 2024.Abstract At a low activity comet the plasma is distributed in an asymmetric way. The hybrid simulation code Amitis is used to look at the spatial evolution of ion velocity distribution functions (VDFs), from the upstream solar wind (SW) to within the comet magnetosphere where the SW is heavily mass‐loaded by the cometary plasma.
A. Moeslinger +4 more
wiley +1 more source
On predictions and laws in biological evolution: Is biology able to formulate general laws and develop inductive predictions as in physics or chemistry?: Is biology able to formulate general laws and develop inductive predictions as in physics or chemistry? [PDF]
EMBO Rep, 2022 Rull V.
europepmc +1 more source
Edmond Halley's Contributions to Hydrogeology. [PDF]
Ground Water, 2021 Deming D.
europepmc +1 more source
Coordinated programs for comet Halley [PDF]
Symposium - International Astronomical Union, 1986 Because comets are so difficult to observe, it is essential to coordinate observations from a variety of telescopes in order to fully understand their behavior. The apparition of Comet Halley represents a unique opportunity for coordinated programs because this is the only predictable comet which is routinely bright enough for the many observational ...
openaire +1 more source
The dynamical history of comet Halley [PDF]
International Astronomical Union Colloquium, 1985 AbstractThe history of the attempts to predict the motion of comet Halley is outlined and the importance of the so-called nongravitational forces acting upon this comet is emphasized. Recent orbital work of the International Halley Watch Astrometry Network is reviewed. Comet Halley’s transverse nongravitational parameter is positive and nearly constant
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The Past Orbit of Halley's Comet [PDF]
Monthly Notices of the Royal Astronomical Society, 1972 I have re-examined the records in the Chinese“Standard Histories”on this famous object, including one set of relatively precise observations made in the year 837 A.D., which has only recently become available in an English translation (Ho 1962). This set, when properly interpreted, consists of the comet’s right ascension on 10 specified dates, given to
openaire +1 more source
87th Annual Meeting of the Meteoritical Society 2025: Abstracts
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley +1 more source