Abstract for Proposal 090414

XMM-Newton follow-up of eROSITA-detected counterparts of fast radio bursts

For almost two years eROSITA has been performing multiple deep all-sky X-ray surveys. We have developed a tool that allows us to make a prediction of the exact time eROSITA observes a certain sky position. This information is used to carry out simultaneous radio and X-ray observations to search for X-ray counterparts of fast radio bursts (FRBs). We propose up to two ToOs with XMM-Newton (each 80 ks) to follow-up possible eROSITA-detected FRB counterparts. These observations will constrain i) the decay rate of the X-ray emission, ii) the X-ray spectrum of the FRB counterpart, and iii) the existence of repeated X-ray flares. The proposed X-ray data will put unique observational constraints on the still unknown nature of FRBs and will distinguish between the countless theoretical models.

Details on Observing Strategy and Trigger Criteria
trigger criterion: new X-ray transient detected by eROSITA that coincides with a fast radio burst reaction time: 1-2 days primary instrument and mode: PN large window mode