Discovery of X-ray pulsations from "next Geminga" - PSR J1836+5925

(2) Chungnam National University; (3) China Medical University; (4) The University of Hong Kong; (5) National Central University; (6) Fu Jen Catholic University); A. K. H. Kong (1); C. P. Hu (5); C. Y. Hui (2); D. C. C. Yen (6); J. Takata (4)

arxiv: 1408.4741 · v1 · pith:GYXCFY2Vnew · submitted 2014-08-20 · 🌌 astro-ph.HE

Discovery of X-ray pulsations from "next Geminga" - PSR J1836+5925

L. C. C. Lin (1) , C. Y. Hui (2) , K. T. Li (3) , J. Takata (4) , C. P. Hu (5) , A. K. H. Kong (1) , D. C. C. Yen (6) , Y. Chou (5) ((1) National Tsing Hua University

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(2) Chungnam National University (3) China Medical University (4) The University of Hong Kong (5) National Central University (6) Fu Jen Catholic University)

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keywords x-rayj1836gamma-raygeminganextpulsationanalysedconsistent

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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.

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Discovery of X-ray pulsations from "next Geminga" - PSR J1836+5925

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