EGU21-7107
https://doi.org/10.5194/egusphere-egu21-7107
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Solar observations with the Nancay Radioheliograph in support of the Solar Orbiter and Parker Solar Probe missions

Karl-Ludwig Klein1 and the NRH team*
Karl-Ludwig Klein and the NRH team
  • 1Observatoire de Paris, LESIA, Meudon, France (ludwig.klein@obspm.fr)
  • *A full list of authors appears at the end of the abstract

The Nancay Radioheliograph is dedicated to imaging the solar corona at decimetre-to-metre wavelengths. The imaged structures are the quiet corona, through thermal bremsstrahlung, and bright collective emissions due to electrons accelerated in quiescent, flaring and eruptive active regions. The instrument produced nearly daily maps of the Sun between 1996 and 2015, at several frequencies in the 150-450 MHz range with sub-second cadence. The observations were stopped in 2015 for a major technical upgrade through the replacement of the correlator and the data acquisition system. They were resumed in November 2020, and at the time of writing the commissioning of the instrument is well underway. This contribution will give a brief overview of the technical changes and present observations at eight frequencies of solar activity since November 2020, including the coronal mass ejection (CME) of December 14 seen in some images of the total solar eclipse, observations conducted during the present perihelion passage of the Parker Solar Probe mission, as well as during periods of interest to the Solar Orbiter mission. The data are freely available, and special products of common visualisation with the space missions will be illustrated.

NRH team:

Karl-Ludwig Klein, Abdallah Hamini, Sophie Masson, Renaud Romagnan, Nicole Vilmer, Christian Fabrice, Gabriel Auxepaules, Guy Kenfack, Christophe Taffoureau, Patricia Cottet and the Nançay Radio Observatory

How to cite: Klein, K.-L. and the NRH team: Solar observations with the Nancay Radioheliograph in support of the Solar Orbiter and Parker Solar Probe missions, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-7107, https://doi.org/10.5194/egusphere-egu21-7107, 2021.