# Atmospheric Response to of an Active Region to new Small Flux Emergence

**Authors:** D. L. Shelton, L. K. Harra, L. M. Green  
**arXiv:** [1412.5623](https://arxiv.org/abs/1412.5623)  
**Date:** 2014-12-17  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/1412.5623v1/

## Key points

- Investigated atmospheric response to a small emerging flux region (EFR) in Active Region 11236 on 23-24 June 2011
- Utilized data from Solar Dynamics Observatory's Atmospheric Imaging Assembly (AIA), Helioseismic and Magnetic Imager (HMI), and Hinode's EUV imaging spectrometer (EIS)
- Observed brightenings in upper photosphere, chromosphere, and corona over EFR location
- Detected flux cancellation in the photosphere
- Large-scale coronal loops formed up to 43 Mm away from EFR
- Enhancements in coronal upflow reached approximately 10 km s$^{-1}$ on north side of EFR
- Coronal jets observed above emerging serpentine field for the first time
- Provides insights into how small flux emergence events can influence various layers of Earth's atmosphere
- Contributes to understanding of solar activity and potential effects on space weather phenomena

## Summary

In this study, the authors investigate the atmospheric response to a small emerging flux region (EFR) that occurred in the positive polarity of Active Region 11236 on 23-24 June 2011. Utilizing data from various instruments such as the Solar Dynamics Observatory's Atmospheric Imaging Assembly (AIA), Helioseismic and Magnetic Imager (HMI), and Hinode's EUV imaging spectrometer (EIS), they determined the atmospheric changes associated with new flux emerging into a pre-existing active region. Brightenings were observed in the upper photosphere, chromosphere, and corona over the location of the EFR. Additionally, flux cancellation was detected in the photosphere. The impact of this flux emergence extended beyond its immediate vicinity with new large-scale coronal loops forming up to 43 Mm away from the EFR and enhancements in coronal upflow reaching approximately 10 km s$^{-1}$ on the north side of the EFR. Notably, jets were formed in both the chromosphere and corona above the emerging serpentine field - marking it as first time that coronal jets have been observed over a serpentine field. This study provides valuable insights into how small flux emergence events can influence various layers of Earth's atmosphere and contributes to our understanding of solar activity and its potential effects on space weather phenomena.