Flame-like Ellerman Bombs and Their Connection to Solar UV Bursts
arXiv:1903.01981 · doi:10.3847/2041-8213/ab18a4
Abstract
Ellerman bombs (EBs) are small-scale intense brightenings in H wing images, which are generally believed to be signatures of magnetic reconnection events around the temperature minimum region of the solar atmosphere. They have a flame-like morphology when observed near the solar limb. Recent observations from the Interface Region Imaging Spectrograph (IRIS) reveal another type of small-scale reconnection events, termed UV bursts, in the lower atmosphere. Though previous observations have shown a clear coincidence of some UV bursts and EBs, the exact relationship between these two phenomena is still under debate. We investigate the spatial and temporal relationship between flame-like EBs and UV bursts using joint near-limb observations between the 1.6--meter Goode Solar Telescope (GST) and IRIS. In total 161 EBs have been identified from the GST observations, and 20 of them reveal signatures of UV bursts in the IRIS images. Interestingly, we find that these UV bursts have a tendency to appear at the upper parts of their associated flame-like EBs. The intensity variations of most EB-related UV bursts and their corresponding EBs match well. Our results suggest that these UV bursts and EBs are likely formed at different heights during a common reconnection process.
arXiv comment5 figures; accepted by ApJL
References in corpus (38)
- The Interface Region Imaging Spectrograph (IRIS)
- Chromospheric Anemone Jets as Evidence of Ubiquitous Reconnection
- Hot Explosions in the Cool Atmosphere of the Sun
- Ellerman Bombs at high resolution: I. Morphological evidence for photospheric reconnection
- Ellerman bombs at high resolution III. Simultaneous observations with IRIS and SST
- Bombs and flares at the surface and lower atmosphere of the Sun
- Solar ultraviolet bursts
- Are IRIS bombs connected to Ellerman bombs?
- A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating
- Ellerman Bombs at high resolution: II. Visibility, triggering and effect on upper atmosphere
- Iris si iv line profiles: An indication for the plasmoid instability during small-scale magnetic reconnection on the sun
- Frequently Occurring Reconnection Jets from Sunspot Light Bridges
- Intermittent reconnection and plasmoids in UV bursts in the low solar atmosphere
- Spectro-Polarimetric Observation of an Emerging Flux Region: Triggering Mechanism of Ellerman Bombs
- Light Bridge in a Developing Active Region. I. Observation of Light Bridge and its Dynamic Activity Phenomena
- Heating mechanisms in the low solar atmosphere through magnetic reconnection in current sheets
- H-alpha features with hot onsets. I. Ellerman bombs
- Ellerman Bombs - Evidence for Magnetic Reconnection in the Lower Solar Atmosphere
- Reconnection brightenings in the quiet solar photosphere
- Surges and Si IV bursts in the solar atmosphere. Understanding IRIS and SST observations through RMHD experiments
- Magnetic reconnection at the earliest stage of solar flux emergence
- Spectral observations of Ellerman bombs and fitting with a two-cloud model
- Small-Scale Structuring Of Ellerman Bombs at Solar Limb
- Simulating Ellerman bomb-like event
- Compact solar UV burst triggered in a magnetic field with a fan-spine topology
- Magnetic reconnection in strongly magnetized regions of the low solar chromosphere
- IRIS Burst Spectra Co-Spatial To A Quiet-Sun Ellerman-Like Brightening
- Various Local Heating Events in the Earliest Phase of Flux Emergence
- Observations and NLTE modeling of Ellerman bombs
- A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating II. 2D Theory and Simulations
- Observational Evidence of Magnetic Reconnection for Brightenings and Transition Region Arcades in IRIS observations
- Onset of secondary instabilities and plasma heating during magnetic reconnection in strongly magnetized regions of the low solar atmosphere
- Ellerman Bombs with Jets: Cause and Effect
- Multi-wavelength Spectral Analysis of Ellerman Bombs Observed by FISS and IRIS
- Solar Ellerman Bombs in 1-D Radiative Hydrodynamics
- RADYN simulations of non-thermal and thermal models of Ellerman bombs
- Solar Ultraviolet Bursts in a Coordinated Observation of IRIS, Hinode and SDO
- Can the temperature of Ellerman Bombs be more than 10000K?
Cited by in corpus (27)
- Transient small-scale brightenings in the quiet solar corona: a model for campfires observed with Solar Orbiter
- Plasmoid-mediated reconnection in solar UV bursts
- Signatures of ubiquitous magnetic reconnection in the lower solar atmosphere
- A Magnetic Reconnection model for Hot Explosions in the Cool Atmosphere of the Sun
- A Cancellation Nanoflare Model for Solar Chromospheric and Coronal Heating III. 3D Simulations and Atmospheric Response
- A White-light Flare Powered by Magnetic Reconnection in the Lower Solar Atmosphere
- Properties of ubiquitous magnetic reconnection events in the lower solar atmosphere
- Formation of solar quiescent coronal loops through magnetic reconnection in an emerging active region
- Plausibility of ultraviolet burst generation in the low solar chromosphere
- EUV brightenings in the quiet-Sun: Signatures in spectral and imaging data from the Interface Region Imaging Spectrograph
- Macrospicules and Their Connection to Magnetic Reconnection in the Lower Atmosphere
- Small-scale magnetic flux emergence preceding a chain of energetic solar atmospheric events
- Sunspot penumbral filaments intruding into a light bridge and the resultant reconnection jets
- Transition region loops in the very late phase of flux-emergence in IRIS sit-and-stare observations
- Chromospheric and coronal heating and jet acceleration due to reconnection driven by flux cancellation. II. Cancellation of two magnetic polarities of unequal flux
- Transition region response to Quiet Sun Ellerman Bombs
- Magnetic Topology of quiet-Sun Ellerman bombs and associated Ultraviolet brightenings
- The Ellerman bomb and Ultraviolet burst triggered successively by an emerging magnetic flux rope
- Small-scale dynamic phenomena associated with interacting fan-spine topologies: quiet-Sun Ellerman bombs, UV brightenings, and chromospheric inverted-Y-shaped jets
- Multifrequency microwave imaging of weak transients from the quiet solar corona
- Fan-shaped jet close to a light bridge
- A new view of the solar interface region from the Interface Region Imaging Spectrograph (IRIS)
- Investigating datasets with high IRIS burst prevalence
- Variation in the intensity ratio at each wavelength point of the Si iv 1394/1403 Å lines. Spectral diagnostics of a bifurcated eruption
- Accessing the fine temporal scale of EUV brightenings and their quasi-periodic pulsations: 1 second cadence observations by Solar Orbiter/EUI
- Revisiting the Spectral Features of Ellerman Bombs and UV Bursts. I. Radiative Hydrodynamic Simulations
- A multi-instrument study of ultraviolet bursts and associated surges in AR 12957