We report the X-ray pulsation of ~173.3 ms for the "next Geminga", PSR J1836+5925, with recent XMM-Newton investigations. The X-ray periodicity is consistent wtih the gamma-ray ephemeris at the same epoch. The X-ray folded light curve has a sinusoidal structure which is different from the double-peaked gamma-ray pulse profile. We have also analysed the X-ray phase-averaged spectra which shows the X-ray emission from PSR J1836+5925 is thermal dominant. This suggests the X-ray pulsation mainly originates from the modulated hot spot on the stellar surface.
@article{arxiv.1408.4741,
title = {Discovery of X-ray pulsations from "next Geminga" - PSR J1836+5925},
author = {L. C. C. Lin and C. Y. Hui and K. T. Li and J. Takata and C. P. Hu and A. K. H. Kong and D. C. C. Yen and Y. Chou},
journal= {arXiv preprint arXiv:1408.4741},
year = {2015}
}
Comments
7 pages, 3 figures, 1 table, accepted for publication in ApJ Letter