Abstract for Proposal 096336
XMM-NEWTON FOLLOW-UP OF A LONG PERIOD RADIO/X-RAY TRANSIENT
Long-period radio transients (LPTs) are a recently discovered class of
astrophysical objects that challenge our understanding of compact objects
and their evolution. The nature of these systems has not been fully
understood. A number of possible models have been suggested, including
magnetars, magnetized white dwarfs (WDs), and binary WD with M star
companions. Transient periodic emission has been identified for a newly
discovered LPT, ASKAP J1832. We propose joint 4x5 ks Swift monitoring and
36ks XMM-Newton follow-up observations on ASKAP J1832 during AO24. We aim
to understand the physical nature of this special LPT by characterizing
its X-ray emission evolution along with the radio emission.
Details on Observing Strategy and Trigger Criteria
We will only trigger XMM-Newton observation when we detect X-ray emission
with luminosity L_X > 10^33 erg/s from ASKAP J1832 with other instruments
(e.g., Swift). The source may change the states on timescales of several
weeks, we therefore request a reaction time of a week. The triggered XMM
observation can be split into multiple segments, all observed within a
week after the trigger.