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aurorae

Allen Foster at the South Pole Telescope in summer 2019–2020
Posted inFeatures

Allen Foster: Greasing Telescope Gears During a 7-Month-Long Night

by Santiago Flórez 25 July 202222 December 2022

While overwintering in Antarctica, Foster maintains the South Pole Telescope facilities.

Three auroral images taken by a citizen scientist in Dunedin, New Zealand.
Posted inEditors' Highlights

Uncovering the Mysterious STEVE Aurora

by Gang Lu 7 June 202214 September 2022

Scientists present the first direct observations on the rapid evolution of a bright red auroral arc into a thin white-mauve arc known as STEVE.

Example of how, given the presence of aurora, an over-the-horizon radar based in Scotland might be used to track an aircraft at 10 km altitude in a region to the north.
Posted inEditors' Highlights

Can Aurora Enhance Radar Monitoring of Arctic Aviation?

by Michael A. Hapgood 2 February 202215 March 2022

Enhanced E-region ionization produced by the aurora can be used to reflect signals from over-the-horizon radars and thus enable those radars to better monitor aviation in Arctic regions.

An Isinglass sounding rocket launch from Poker Flat, Alaska
Posted inResearch Spotlights

Converting Auroral Observations into 3D Structures

by Morgan Rehnberg 3 January 20222 February 2022

Using 1D and 2D data sources as model constraints yields fine-scale insights into real-world aurorae.

Artist rendering of magnetic reconnection taking place in the Earth's magnetosphere
Posted inEditors' Vox

Hidden Atmospheric Particles Sculpt Near-Earth Space Environment

by S. Toledo, M. André, N. Aunai, C.R. Chappell, J. Dargent, S.A. Fuselier, A. Glocer, D.B. Graham, S. Haaland, M. Hesse, L.M. Kistler, B. Lavraud, W. Li, T. E. Moore, P. Tenfjord and S.K. Vines 22 September 202118 July 2023

Charged particles escape our atmosphere following Earth’s magnetic field and constitute a main source of matter that modulates Sun-Earth interactions.

The location of Jupiter’s northern aurorae, as seen by the Hubble Space Telescope
Posted inResearch Spotlights

Could Low-Altitude Reconnection Power Jupiter’s Polar Aurorae?

by Morgan Rehnberg 21 September 202118 July 2023

Magnetic reconnection events less than 2 Jovian radii above the planet’s cloud tops could explain why Juno has yet to observe a source for Jupiter’s polar aurore.

Researchers present a new technique for estimating magnetosphere-ionosphere interactions at Earth’s poles.
Posted inResearch Spotlights

Filling the Gaps in the SuperDARN Archive

Kate Wheeling, freelance science writer by Kate Wheeling 13 September 202121 October 2021

Researchers present a new pattern-finding technique to better estimate missing data on ionospheric plasma velocities.

An artist’s conception of the Cluster satellites in orbit around Earth
Posted inResearch Spotlights

Understanding Aurora Formation with ESA’s Cluster Mission

by Morgan Rehnberg 7 September 202129 September 2021

Over 2 decades, Cluster has shed light on the auroral acceleration region, where parallel electric fields send charged particles on a collision course with the atmosphere.

Two plots showing the Cumulative probability of scintillation exceeding a certain value versus geomagnetic activity in July-December 2017.
Posted inEditors' Highlights

The Auroral E-region is a Source for Ionospheric Scintillation

by Michael P. Hickey 9 August 202111 August 2022

Observations reveal a connection between auroral particle precipitation and scintillation, indicating that the ionospheric E-region is a key source region for phase scintillation at auroral latitudes.

Image of dune aurora taken by a citizen scientist
Posted inEditors' Highlights

Dune Aurora Explained by Satellite-Ground Studies

by Mary Hudson 4 May 202116 March 2023

Spacecraft observations support the mechanism for explaining auroral dunes observed from the ground by citizen scientists.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

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