Henrik Eklund

TL;DR: In this article, the authors present an initial study of one of the first ALMA Band 3 observations of the Sun, which covers a duration of 48 min at a cadence of 2 s targeting a quiet Sun region at disc-centre.

TL;DR: In this paper, the authors presented an initial study of one of the first ALMA Band 3 observations of the Sun with the aim to characterise the diagnostic potential of brightness temperatures measured with ALMA on the Sun.

TL;DR: In this article, the authors analyzed ALMA Band 3 data (∼3 mm/100 GHz) with a spatial resolution of ∼1.4-2.1 arcsec and a duration of ∼40 min together with SDO/HMI magnetograms.

TL;DR: The results demonstrate that millimetre brightness temperatures efficiently track upwardly propagating shock waves in the middle chromosphere and show that the gradient of the brightness temperature between wavelengths within ALMA band 6 can potentially be used as a diagnostics tool in understanding the small-scale dynamics at the sampled layers.

TL;DR: In this paper, the physical conditions of the atmosphere in the presence of solar chromosphere were evaluated at millimetre wavelengths, and the results showed that the conditions were similar to those of the Earth's atmosphere.