Browse Journal Highlights

Highlights include enriched and related content of notable journal articles presented on Eos org AGU org AGU On Demand and in AGU journals

Auroras May Explain an Anomaly in Earth’s Ionosphere

Emily Underwood, Freelance Writer

From Eos.org: Research Spotlights— A new study finds that the ionospheric anomaly over the Weddell Sea is likely influenced by proximity to auroral energy input, rather than by tilting magnetic fields.  Starting at about 80 kilometers above Earth, the bombardment of solar ultraviolet light and X-rays.... more

Measuring the effect of Sudden Stratospheric Warming on radio signals

Editor’s Highlight—   Recent and past measurements of stratospheric temperatures employing satellite and ground based radiosonde techniques have confirmed the phenomenon of Sudden Stratospheric Warming (SSW) in the winter northern hemisphere. However, the impacts of such phenomenon on the ionosphere.... more

How Geomagnetic Storms Light Up the Geocorona

Leah Crane, Freelance Writer

From Eos.org: Research Spotlights— After geomagnetic storms, Earth’s corona abruptly increases in hydrogen density. For the first time, serendipitous observations have allowed researchers to investigate why.  At the very edge of the exosphere, the outermost layer of Earth’s atmosphere, sunlight scatters.... more

The Two-Stream Approach: Energizer Bunny of Kinetic Electron Physics

Editor’s Highlight—   The “two-stream” approach to calculating electron transport along a magnetic field line has been a standard technique since the late 1960s. It works well in the ionospheres of planets with strong internal dipole fields, such as Earth. It’s called a two-stream approach because it.... more

Statistical study of particle acceleration in the core of foreshock transients

Editor’s Highlight—   Particle energization is a key process in space plasmas. This paper presents a statistical study of ion and electron energization in the core of foreshock transients, showing that the energization of ions and electrons are different. It also shows that the ion and election energization.... more

Understanding Saturn’s space environment: Looking backward, looking forwards

Editor’s Highlight—   With NASA’s Cassini Mission to Saturn now complete, this paper shows how the Cassini Plasma Spectrometer (CAPS) instrument contributed to our understanding of the Saturn space environment. The authors have used forward modeling to produce a new moments dataset that could be useful.... more

Statistical properties of solar wind reconnection exhausts

Editor’s Highlight— The analysis presented in this paper shows for the first time that the amount of increase in plasma density and ion temperature across solar wind exhausts depends on both the external plasma beta and the magnitude of the background guide magnetic field. This is an important new result.... more

How “Whistling” Plasma Waves Shape Earth’s Radiation Belts

Mark Zastrow, Freelance Writer

From Eos.org: Research Spotlights— The Van Allen radiation belts surrounding Earth shrink and swell due to plasma waves moving through them, an analysis of satellite data suggests. The defining scientific discovery of the early space age was the Van Allen radiation belts: regions of hazardous, highly.... more