EUV jets, type III radio bursts and sunspot waves investigated using SDO/AIA observations

Abstract

Images from the Solar Dynamics Observatory (SDO) at 211A are used to identify the solar source of the type III radio bursts seen in WIND/WAVES dynamic spectra. We analyse a 2.5 hour period during which six strong bursts are seen. The radio bursts correlate very well with the EUV jets coming from the western side of a sunspot in AR11092. The EUV jet emission also correlates well with brightening at what looks like their footpoint at the edge of the umbra. For 10-15 min after strong EUV jets are ejected, the footpoint brightens at roughly 3 min intervals. In both the EUV images and the extracted light curves, it looks as though the brightening is related to the 3-min sunspot oscillations, although the correlation coefficient is rather low. The only open field near the jets is rooted in the sunspot. We conclude that active region EUV/X-ray jets and interplanetary electron streams originate on the edge of the sunspot umbra. They form along a current sheet between the sunspot open field and closed field connecting to underlying satellite flux. Sunspot running penumbral waves cause roughly 3-min jet footpoint brightening. The relationship between the waves and jets is less clear.

4 pages, 7 figures, Accepted by A&A Letters. For associated gif movie, see http://www.mps.mpg.de/data/outgoing/innes/jets/losb_304_211_rd.gif

References in corpus (4)

• Relationship between wave processes in sunspots and quasi-periodic pulsations in active region flares
• Magnetic Reconnection along Quasi-Separatrix Layers as a Driver of Ubiquitous Active Region Outflows
• The Nature of Running Penumbral Waves Revealed
• Observational Signatures of Simulated Reconnection Events in the Solar Chromosphere and Transition Region

Cited by in corpus (25)

• A Review of Solar Type III Radio Bursts
• Solar Coronal Jets: Observations, Theory, and Modeling
• Magnetic Flux Cancellation as the Trigger of Solar Quiet-Region Coronal Jets
• A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating
• Multiwavelength study of twenty jets emanating from the periphery of active regions
• IRIS and SDO Observations of Solar Jetlets Resulting from Network-Edge Flux Cancelation
• Hi-C 2.1 Observations of Jetlet-like Events at Edges of Solar Magnetic Network Lane
• Observations of solar X-ray and EUV jets and their related phenomena
• Sunspot Waves and Triggering of Homologous Active Region Jets
• Magnetic Flux Cancellation as the Trigger Mechanism of Solar Coronal Jets
• A case-study of multi-temperature coronal jets for emerging flux MHD models
• Case studies of multi-day 3He-rich solar energetic particle periods
• Observations of multiple blobs in homologous solar coronal jets in closed loops
• Flare-associated type III radio bursts and dynamics of the EUV jet from SDO/AIA and RHESSI observations
• Radio Diagnostics of Electron Acceleration Sites During the Eruption of a Flux Rope in the Solar Corona
• Cusp-shaped structure of a jet observed by IRIS and SDO
• Spectroscopic observations of a flare-related coronal jet
• Linking the Sun to the Heliosphere Using Composition Data and Modelling. A Test Case with a Coronal Jet
• Temperature and Density Structure of a Recurring Active Region Jet
• A tiny event producing an interplanetary type III burst
• Periodicities in an active region correlated with Type III radio bursts observed by Parker Solar Probe
• On Solar Recurrent Coronal Jets: Coronal Geysers as Sources of Electron Beams and Interplanetary Type-III Radio Bursts
• The Association of a J-burst with a Solar Jet
• Thermal and Non-Thermal Properties of Active Region Recurrent Coronal Jets
• High-resolution He I 10830 Å narrowband imaging for precursors of chromospheric jets and their quasi-periodic properties