activity
20032026
most citedThe eROSITA X-ray telescope on SRG

884 citations · 4.5k across the 92 of their papers we have counts for

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astro-ph.SR2026

The changing optical and X-ray emission of the dormant Cas star HD 45314

G. Rauw, Y. Nazé, E. Bryssinck +25

Cas stars are Oe/Be stars that exhibit bright and hard X-ray emission. HD45314 belonged to this category, but lost its Cas characteristics as its circumstellar disc started…

astro-ph.SR2026

The X-ray catalogue of FGK stars within 10 pc: The coronal temperature-brightness relation explained with the RTV scaling law

M. M. Bennedik, B. Stelzer, M. Caramazza +3

A comprehensive measurement of stellar X-ray emission has important implications for our understanding of stellar dynamos, exoplanet atmosphere loss, and evaporation of protoplanet…

astro-ph.SR2026

eROSITA all-sky survey - stars and optical loading

J. Robrade, K. Dennerl, M. J. Freyberg +1

eROSITA (extended ROentgen Survey with an Imaging Telescope Array) on board the Spectrum-Roentgen-Gamma (SRG) spacecraft has performed the eROSITA All-Sky Survey (eRASS) at X-ray e…

astro-ph.SR2026

eROSITA's cool star population explained

J. H. M. M. Schmitt, P. C. Schneider, S. Czesla +2

The rotation-activity connection is the standard paradigm for interpreting chromospheric and coronal activity in late-type stars, namely, stars with outer convection zones. This pa…

astro-ph.SR2026

X-ray counterparts to stellar MeerKAT Galactic-plane compact radio sources

O. D. Egbo, P. J. Groot, D. A. H. Buckley +5

Radio emission from magnetically active stars arises mainly from non-thermal processes and complements high-energy X-ray emission. Sensitive, wide-field radio and X-ray surveys now…

astro-ph.SR2025

The stellar corona-chromosphere connection. A comprehensive study of X-ray and Ca II IRT fluxes from eROSITA and Gaia

S. Freund, S. Czesla, B. Fuhrmeister +4

Stellar activity can be observed at different wavelengths in a variety of different activity indicators. We investigated the correlation between coronal and chromospheric emissions…