Penumbral Waves Driving Solar Fan-shaped Chromospheric Jets

  • Reid A
  • Henriques V
  • Mathioudakis M
  • et al.
7Citations
Citations of this article
6Readers
Mendeley users who have this article in their library.

Abstract

We use H α imaging spectroscopy taken via the Swedish 1 m Solar Telescope to investigate the occurrence of fan-shaped jets at the solar limb. We show evidence for near-simultaneous photospheric reconnection at a sunspot edge leading to the jets appearance, with upward velocities of 30 km s −1 , and extensions up to 8 Mm. The brightening at the base of the jets appears recurrent, with a periodicity matching that of the nearby sunspot penumbra, implying running penumbral waves could be the driver of the jets. The jets’ constant extension velocity implies that a driver counteracting solar gravity exists, possibly as a result of the recurrent reconnection erupting material into the chromosphere. These jets also show signatures in higher temperature lines captured from the Solar Dynamics Observatory , indicating a very hot jet front, leaving behind optically thick cool plasma in its wake.

Cite

CITATION STYLE

APA

Reid, A., Henriques, V. M. J., Mathioudakis, M., & Samanta, T. (2018). Penumbral Waves Driving Solar Fan-shaped Chromospheric Jets. The Astrophysical Journal Letters, 855(2), L19. https://doi.org/10.3847/2041-8213/aab155

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free