74 citations · 367 across the 14 of their papers we have counts for
14 papers
A multi-wavelength view of the multiple activity cycles of ~Eridani
B. Fuhrmeister, M. Coffaro, B. Stelzer +3
Eridani is a highly active young K2 star with an activity cycle of about three years established using Ca II H & K line index measurements (S_MWO). This relatively short cycle…
The Great Flare of 2021 November 19 on AD Leo. Simultaneous XMM-Newton and TESS observations
B. Stelzer, M. Caramazza, St. Raetz +2
We present a detailed analysis of a superflare on the active M dwarf star AD Leonis. The event presents a rare case of a stellar flare observed simultaneously in X-rays (with XMM-N…
The X-ray activity of the young solar-like star Kepler-63 and the structure of its corona
M. Coffaro, B. Stelzer, S. Orlando
The X-ray satellite XMM-Newton has so far revealed coronal cycles in seven solar-like stars. In this sample, the youngest stars Eridani (400 Myr) and Horologii (600 Myr) di…
Characterizing X-ray activity cycles of young solar-like stars with solar observations
M. Coffaro, B. Stelzer, S. Orlando
Throughout an activity cycle, magnetic structures rise to the stellar surface, evolve and decay. Tracing their evolution on a stellar corona allows us to characterize the X-ray cyc…
A first eROSITA view of ultracool dwarfs
B. Stelzer, A. Klutsch, M. Coffaro +2
We present the first X-ray detections of ultracool dwarfs (UCDs) from the first all-sky survey of the extended ROentgen Survey with an Imaging Telescope Array (eROSITA) onboard the…
An X-ray activity cycle on the young solar-like star
M. Coffaro, B. Stelzer, S. Orlando +7
In 2015 we started the XMM-Newton monitoring of the young solar-like star Epsilon Eridani (440 Myr), one of the youngest solar-like stars with a known chromospheric CaII cycle. By…