activity
20242026
most citedA fast X-ray transient from a weak relativistic jet associated with a type Ic-BL supernova

30 citations · 60 across the 14 of their papers we have counts for

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8 papers · 1 filter

astro-ph.HE2026

Einstein Probe discovery of the magnetar EP J223759.5+531421

N. Rea, F. Coti Zelati, A. Borghese +44

We report the discovery and early outburst evolution of the new Galactic magnetar EP J223759.5+531421, detected by the Einstein Probe Wide-field X-ray Telescope on 2026 June 28. Fo…

astro-ph.SR2026

A superflare of BP Tau simultaneously caught by EP X-ray and TESS optical observations

Xingyu Zhou, Mingjun Liu, Gregory J. Herczeg +10

Multiwavelength observations of stellar flares trace the activity of different components of the stars' outer atmosphere, providing insight into their interactions. In the present…

astro-ph.HE2026

X-ray Activity of the RS CVn-type Star σ Gem with the First-Year Observations of Einstein Probe

Xuan Mao, Giuseppina Micela, Fabio Favata +3

Context. Stellar flares are energetic events driven by the sudden release of magnetic energy in the stellar atmosphere. Studying these flares is crucial for understanding their imp…

astro-ph.IM2026

Onboard catalog of known X-ray sources for EP-WXT

He-Yang Liu, Haiwu Pan, Yuan Liu +14

The Einstein Probe (EP) is dedicated to explore the dynamic X-ray universe and capture transient events in real time with its Wide-field X-ray Telescope (WXT). However, WXT's unpre…

astro-ph.HE2026

X-rays breaking out of pre-explosion ejecta mark a supernova's first light

Weimin Yuan, Qiu-Ju Huang, Jin-Ping Zhu +130

Massive stars die as core-collapse supernovae, whose optical light emerges days after the implosion. Theory predicts that the initial collapse-driven shock, upon breaking through t…

astro-ph.EP2026

Spin-Orbit Geometry of AU Mic b and c from Back-to-Back Transits Observed Contemporaneously with Magellan PFS, LCOGT, and CHEOPS

Zitao Lin, Gyula M. Szabó, Krzysztof Sz. Zieliński +37

Young planets offer a unique window into the early stages of planetary evolution. AU Mic is one of the nearest (9.8 pc) pre-main sequence stars (~20 Myr), hosting two transiting Ne…

astro-ph.SR2026

Nature of HD 251108: an RS CVn binary with a long-term evolving spot

Xinlin Zhao, Song Wang, B. Fuhrmeister +5

Recently, the Lobster Eye Imager for Astronomy (LEIA) detected the longest-lasting and most energetic stellar X-ray flare event from HD 251108. In this work, we re-determined the a…

astro-ph.SR2026

Multi-wavelength Study of A Superflare on RS CVn-type Star HD22468 Triggered at Hard X-ray by SVOM

J. Wang, W. J. Xie, F. Cangemi +36

Detection of stellar flares at hard X-ray is still rare at the current stage. A transient was recently detected by the hard X-ray camera, ECLAIRs onboard the SVOM mission at 11:39:…