Results 1 to 10 of about 438 (257)

Penetration of MeV electrons into the mesosphere accompanying pulsating aurorae [PDF]

Scientific Reports, 2021
Pulsating aurorae (PsA) are caused by the intermittent precipitations of magnetospheric electrons (energies of a few keV to a few tens of keV) through wave-particle interactions, thereby depositing most of their energy at altitudes ~ 100 km. However, the
Pekka T Verronen
exaly   +3 more sources

The first mitochondrial genome of spongillafly from Asia (Neuroptera: Sisyridae: Sisyra aurorae Navás, 1933) and phylogenetic implications of Osmyloidea [PDF]

Mitochondrial DNA. Part B. Resources, 2021
The spongillafly species Sisyra aurorae Navás, 1933 (Neuroptera: Sisyridae) is an endemic species in China and is first recorded from Shanghai. The mitogenome of this species is sequenced, representing the first mitogenome of Sisyridae from Asia.
Xiumei Lu, Aili Lin, Dongsheng Wang, Xingyue Liu   +3 more
doaj   +2 more sources

Evidence for Alfvén waves powering auroral arc via a static electric potential drop [PDF]

Nature Communications
Natural light displays known as the aurora provide a captivating glimpse into the electromagnetic dynamics in space plasmas. Aurorae are not exclusive to Earth but also observed on celestial bodies including planets and even comets. Previous studies have
S. Tian, Z. Yao, J. R. Wygant, R. L. Lysak, J. Bortnik, L. R. Lyons, J. Liang, R. Shi, C. P. Ferradas, Y. Shen, G. D. Reeves   +10 more
doaj   +2 more sources

Direct evidence of substorm-related impulsive injections of electrons at Mercury [PDF]

Nature Communications, 2023
Mercury’s magnetosphere is known to involve fundamental processes releasing particles and energy like at Earth due to the solar wind interaction. The resulting cycle is however much faster and involves acceleration, transport, loss, and recycling of ...
Sae Aizawa, Yuki Harada, Nicolas André, Yoshifumi Saito, Stas Barabash, Dominique Delcourt, Jean-André Sauvaud, Alain Barthe, Andréi Fedorov, Emmanuel Penou, Shoichiro Yokota, Wataru Miyake, Moa Persson, Quentin Nénon, Mathias Rojo, Yoshifumi Futaana, Kazushi Asamura, Manabu Shimoyama, Lina Z. Hadid, Dominique Fontaine, Bruno Katra, Markus Fraenz, Norbert Krupp, Shoya Matsuda, Go Murakami   +24 more
doaj   +2 more sources

First record of a male-male aggressive interaction in the golden Alpine salamander Salamandra atra aurorae (Caudata, Salamandridae) [PDF]

Herpetozoa, 2023
The golden Alpine salamander Salamandra atra aurorae Trevisan, 1982 is an endemic subspecies found in Sette Comuni and Vezzena plateau in Veneto, Italy.
Milos Di Gregorio, Raoul Manenti, Danilo Borgatti   +2 more
doaj   +3 more sources

Global upper-atmospheric heating on Jupiter by the polar aurorae [PDF]

Nature, 2021
James O'Donoghue, Luke E Moore, Henrik Melin   +2 more
exaly   +2 more sources

Great “Space Weather Events” in March 1653 and September 1672 Were Not Supported With Simultaneous/Clustering Auroral Observations During the Maunder Minimum

Frontiers in Astronomy and Space Sciences, 2022
The solar activity has been significantly weakened during the Maunder Minimum (MM: 1645–1715), whereas it has been somewhat controversial to reconstruct the actual solar-activity magnitude and the space weather activity in this interval.
Kentaro Hattori, Hisashi Hayakawa, Hisashi Hayakawa, Hisashi Hayakawa, Yusuke Ebihara   +4 more
doaj   +1 more source

What the Upper Atmospheres of Giant Planets Reveal

Remote Sensing, 2022
The upper atmospheres of the Giant Planets, Jupiter, Saturn, Uranus and Neptune are transition regions between meteorological layers and outer space. As a result of their exceptionally rarefied nature, they are highly sensitive and therefore revealing ...
James O’Donoghue, Tom Stallard
doaj   +1 more source

A review for Japanese auroral records on the three extreme space weather events around the International Geophysical Year (1957–1958)

Geoscience Data Journal, 2023
Solar Cycle 19 was probably the greatest solar cycle over the last four centuries and significantly disrupted the solar‐terrestrial environments with a number of solar eruptions and resultant geomagnetic storms. At its peak, the International Geophysical
Hisashi Hayakawa, Yusuke Ebihara, Hidetoshi Hata   +2 more
doaj   +1 more source

A possible case of sporadic aurora observed at Rio de Janeiro

Earth, Planets and Space, 2020
Being footprints of major magnetic storms and hence major solar eruptions, mid- to low-latitude aurorae have been one of the pathways to understand solar–terrestrial environments.
Denny M. Oliveira, Hisashi Hayakawa, Ankush Bhaskar, Eftyhia Zesta, Geeta Vichare   +4 more
doaj   +1 more source