activity
20242026
most citedEP250207b is not a collapsar fast X-ray transient. Is it due to a compact object merger?

1 citations · 1 across the 5 of their papers we have counts for

collaborators

7 papers

astro-ph.HE2026

The (missing) gamma-ray counterparts to EP events

Maria Edvige Ravasio, Ansh Chopra, Peter G. Jonker +23

While the connection of Fast X-ray Transients (FXTs) detected by Einstein Probe (EP) with Gamma-ray Bursts (GRBs) is increasingly compelling, most lack gamma-ray counterparts, leav…

astro-ph.HE2026

Gas absorption of soft X-rays strongly impacts the redshift distribution of dark Fast X-ray Transients

Javier Sánchez-Sierras, Peter G. Jonker, Jonathan Quirola-Vásquez +25

The progenitors of many Fast X-ray Transients (FXTs) and those of -ray bursts (GRBs) are strongly linked. Given that "dark" GRBs are typically found to be events suffering from…

astro-ph.HE2026

A JWST redshift for the host galaxy of EP250207b of z=3.2: a collapsar origin is viable

Agnes P. C. van Hoof, Peter G. Jonker, Andrew J. Levan +24

We present James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) observations of the field of the fast X-ray transient (FXT) detected by Einstein Probe, EP250207b, to…

astro-ph.HE2026

Optical observations of candidate host galaxies of eight fast X-ray transients

Agnes P. C. van Hoof, Peter G. Jonker, Lieke Tommel +15

Fast X-ray transients (FXTs) are extragalactic flashes of X-rays with a typical duration of minutes to hours for which a variety of origins has been proposed and observed. To decip…

astro-ph.HE2025★ 1 cited

EP250207b is not a collapsar fast X-ray transient. Is it due to a compact object merger?

P. G. Jonker, A. J. Levan, Xing Liu +41

Fast X-ray Transients (FXTs) are short-lived extra-galactic X-ray sources. Recent progress through multi-wavelength follow-up of Einstein Probe discovered FXTs has shown that sever…

astro-ph.HE2025

EP240801a/XRF 240801B: An X-ray Flash Detected by the Einstein Probe and Implications of its Multiband Afterglow

Shuai-Qing Jiang, Dong Xu, Agnes P. C. van Hoof +89

We present multiband observations and analysis of EP240801a, a low-energy, extremely soft gamma-ray burst (GRB) discovered on August 1, 2024 by the Einstein Probe (EP) satellite, w…

astro-ph.SR2024

The mass of the white dwarf in YY Dra (=DO Dra): Dynamical measurement and comparative study with X-ray estimates

Ayoze Álvarez-Hernández, Manuel A. P. Torres, Tariq Shahbaz +7

We present a dynamical study of the intermediate polar cataclysmic variable YY Dra based on time-series observations in the band, where the donor star is known to be the major…