Results 61 to 70 of about 4,526,063 (300)

Solar Energetic Particle Track-production Rates at 1 au: Comparing In Situ Particle Fluxes with Lunar Sample-derived Track Densities

The Astrophysical Journal Letters, 2023
Heavy ( Z > 26) solar energetic particles (SEPs) with energies ∼1 MeV nucleon ^−1 are known to leave visible damage tracks in meteoritic materials. The density of such “solar flare tracks” in lunar and asteroidal samples has been used as a measure of a ...
A. R. Poppe, P. S. Szabo, E. R. Imata, L. P. Keller, R. Christoffersen   +4 more
doaj   +1 more source

MULTI-SPACECRAFT OBSERVATIONS OF RECURRENT 3He-RICH SOLAR ENERGETIC PARTICLES [PDF]

, 2014
We study the origin of 3He-rich solar energetic particles (
R. Bučík, D. Innes, U. Mall, A. Korth, G. Mason, R. Gómez-Herrero   +5 more
semanticscholar   +1 more source

The Sun-Earth Connection of Energetic Particles

, 2012
The origin of solar energetic particle (SEP) events is an issue for the understanding of particle acceleration and transport in astrophysics, as well as for space weather.
R. Miteva, O. Malandraki, G. Trottet, K.-L. Klein, S. Masson, S. Samwel   +5 more
core   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Short-term Classification of Strong Solar Energetic Particle Events Using Multivariate Time-series Classifiers

The Astrophysical Journal
Solar energetic particle (SEP) events are one of the most crucial aspects of space weather that require continuous monitoring and forecasting. Their prediction depends on various factors, including source eruptions.
Sumanth A. Rotti, Berkay Aydin, Petrus C. Martens   +2 more
doaj   +1 more source

Improved Energetic-Behaviors of Spontaneously Surface-Mediated Al Particles

Scientific Reports, 2017
Surface-mediated Al particles are synthesized by incorporating the stable fluoride reaction of Al-F on a pure Al surface in place of natural oxides.
Dong Won Kim, Kyung Tae Kim, T. Min, K. J. Kim, S. Kim   +4 more
semanticscholar   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

A Living Catalog of Parker Solar Probe IS⊙IS Energetic Particle Enhancements

The Astrophysical Journal Supplement Series, 2023
Energetic charged particles are pervasive throughout the heliosphere with contributions from solar energetic particle events, stream and corotating interaction regions, galactic cosmic rays, anomalous cosmic rays, and suprathermal ions.
J. G. Mitchell, C. M. S. Cohen, T. J. Eddy, C. J. Joyce, J. S. Rankin, M. M. Shen, G. A. de Nolfo, E. R. Christian, D. J. McComas, R. L. McNutt Jr., M. E. Wiedenbeck, N. A. Schwadron, M. E. Hill, A. W. Labrador, R. A. Leske, R. A. Mewaldt, D. G. Mitchell, J. R. Szalay   +17 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

In-depth Analysis of the 2022 March 28 3He-rich Solar Energetic Particle Event

The Astrophysical Journal
On 2022 March 28, a solar eruption from active region AR 12975 produced a solar energetic particle (SEP) event observed by BepiColombo (BC; 0.57 au), STEREO-A (STA; 0.97 au), GOES (1.0 au), ACE (L1), and Wind (L1).
Mirko Stumpo, Monica Laurenza, Simone Benella, Anna Milillo, Christina Plainaki, Matthew J. West, Pietro Zucca, Stas Barabash, Daniel Heyner, Ali Varsani, Go Murakami, Shyama Narendranath, Alessandro Aronica, H. U. Auster, Lorenzo Biasiotti, Alessandro Brin, Luca Colasanti, D. Constantinescu, Elisabetta De Angelis, Pier Paolo Di Bartolomeo, D. Fischer, Stavro Ivanovski, Harald Jeszenszky, Adrian Kazakov, Gunter Laky, Valeria Mangano, Stefano Massetti, Martina Moroni, Alessandro Mura, Livio Narici, Hans Nilsson, Raffaella Noschese, Stefano Orsini, Grace Richards, I. Richter, Rosanna Rispoli, Beatriz Sanchez-Cano, Roberto Sordini, Srikar P. Tadepalli, Nello Vertolli, Martin Wieser, Hayley Williamson   +41 more
doaj   +1 more source