Coronal loops are the building blocks of the X-ray bright solar corona. They owe their
brightness to the dense confined plasma, and this review focuses on loops mostly as …

X-ray emission from stars in the cool half of the Hertzsprung-Russell diagram is generally
attributed to the presence of a magnetic corona that contains plasma at temperatures …

The first flare on the Sun was observed exactly 150 years ago. During most of the long
history, only secondary effects have been noticed, so flares remained a riddle. Now the …

We have analyzed a number of intense X-ray flares observed in the Chandra Orion
Ultradeep Project (COUP), a 13 day observation of the Orion Nebula Cluster (ONC) …

We have detected 300 X-ray sources within the half-mass radius (2 farcm 79) of the globular
cluster 47 Tucanae in a deep (281 ks) Chandra exposure. We perform photometry and …

We report on a large stellar flare from the nearby dMe flare star EV Lac observed by the Swift
and Konus-Wind satellites and the Liverpool Telescope. It is the first large stellar flare from a …

Coronal astronomy is by now a fairly mature discipline, with a quarter century having gone
by since the detection of the first stellar X-ray coronal source (Capella), and having …

We have analyzed high-resolution X-ray spectra of a sample of 22 active stars observed with
the High Energy Transmission Grating Spectrometer on Chandra in order to investigate their …

We report results of deep X-ray observations of AB Doradus obtained with the XMM-Newton
observatory during its Performance Verification phase. The main objective of the analysis is …

Abstract We have used Zeeman–Doppler maps of the surface field of the young, rapid
rotator AB Dor (P rot= 0.514 d) to extrapolate the coronal field, assuming it to be potential …