Editing Stellar corona (section)

====Bright points====
Bright points are small active regions found on the solar disk. X-ray bright points were first detected on April 8, 1969, during a rocket flight.<ref name=Giacconi />

The fraction of the solar surface covered by bright points varies with the solar cycle. They are associated with small bipolar regions of the magnetic field. Their average temperature ranges from 1.1&nbsp;MK to 3.4&nbsp;MK. The variations in temperature are often correlated with changes in the X-ray emission.<ref>{{cite journal |last1=Kariyappa |first1= R. |last2=Deluca |first2= E. E. |last3=Saar |first3= S. H. |last4=Golub |first4= L. |last5=Damé |first5= L. |last6=Pevtsov |first6= A. A. |last7=Varghese |first7= B. A. |title= Temperature variability in X-ray bright points observed with Hinode/XRT | journal= Astronomy & Astrophysics| year= 2011 | volume= 526 |pages= A78 | bibcode = 2011A&A...526A..78K | doi = 10.1051/0004-6361/201014878|doi-access=free }}</ref>