General information
EP-WXT trigger 0170924151 was followed up by RAPAS, which identifies the optical counterpart with the high-proper-motion Gaia DR3 M-dwarf source J15587+2351E / PM 1218502635856444672. The reported RAPAS astrometric position is RA=239.6871 deg, Dec=23.8549 deg, with the authors concluding the event is a stellar flare from nearby M-dwarf PM J15587+2351E.
Wavelength coverage
- X-ray: The event was an EP-WXT trigger, with the original EP-WXT circular referenced but not included in the provided text.
- Optical: RAPAS observed starting 20 minutes after the trigger for 60 minutes using Gaia-like G, Gbp, and Grp filters, with a second epoch 24.2 hours later.
- Astrometry/catalog: Gaia DR3 was used for astrometry and photometric calibration, and the source was associated with Gaia DR3 J15587+2351E.
No radio, infrared, ultraviolet, gamma-ray, gravitational-wave, or neutrino observations are mentioned.
Lightcurve and spectrum
- RAPAS forced aperture photometry reports G-band fading from G=12.13 at MJD 61227.92963 to G=12.71 at MJD 61227.97132 during the first observing sequence.
- The later follow-up epoch at MJD 61228.92248 reports G=13.14.
- Reported color measurements during the first sequence include Gbp-Grp values from 1.05 to 1.72.
Redshift
What’s special vs typical