Speaker
Description
eROSITA's time-domain capabilities have enabled the discovery and characterization of four new quasi-periodic X-ray eruption (QPE) sources. A wealth of X-ray follow-up observations exists, as does a large number of theoretical models that can broadly explain the X-ray properties of QPEs. While characterizing these sources in more detail with X-ray observations is valuable, multi-wavelength observations can provide complementary information with potentially more constraining power to discriminate between (or rule out) existing theories and models, and to drive future modeling efforts.
I will present new ultraviolet observations of a QPE source taken with the Hubble space telescope. These observations represent the highest spatial resolution time-resolved data available for a QPE, are at least 2 orders of magnitude more sensitive than existing UV data, and are likely the most stringent constraints on UV variability for the foreseeable future. I will discuss our results and their implications in the context of theoretical models for QPEs.
