ALMA observes a giant sunspot (1.25 millimetres)

This ALMA image of an enormous sunspot was taken at a wavelength of 1.25 millimetres. Sunspots are transient features that occur in regions where the Sun’s magnetic field is extremely concentrated and powerful. They have lower temperatures than their surrounding regions, which is why they appear relatively dark.

These observations are the first ever made of the Sun with a facility where ESO is a partner. They are an important expansion of the range of observations that can be used to probe the mysterious physics of our nearest star.

Oikeudet:

ALMA (ESO/NAOJ/NRAO)

Kuvasta

Tunnistus:eso1703a
Tyyppi:Planetaarinen
Julkaisupäivä:17. tammikuuta 2017 15:00
Vastaavat julkaisut:eso1703
Koko:1995 x 1942 px

Kohteesta

Nimi:Sun, Sun spot
Tyyppi:Solar System : Star : Feature : Photosphere : Sunspot
Kategoria:Solar System

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Värit ja suotimet

KaistaAallonpituusTeleskooppi
Millimetri1.25 mmAtacama Large Millimeter/submillimeter Array
Band 6