DISCOVERY OF X-RAY PULSATIONS FROM THE NEXT GEMINGA, PSR J1836+5925

Journal Article · Sat Sep 20 00:00:00 EDT 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/793/1/L8· OSTI ID:22365005

Lin, L. C. C.; Kong, A. K. H. ^[1]; Hui, C. Y. ^[2]; Li, K. T. ^[3]; Takata, J. ^[4]; Hu, C. P.; Chou, Y. ^[5]; Yen, D. C. C., ^[6]

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1. Institute of Astronomy, National Tsing-Hua University, Hsinchu 30013, Taiwan (China)
2. Department of Astronomy and Space Science, Chungnam National University, Daejeon (Korea, Republic of)
3. Department of Biological Science and Technology, China Medical University, Taichung 40402, Taiwan (China)
4. Department of Physics, University of Hong Kong, Pokfulam Road, Hong Kong (China)
5. Graduate Institute of Astronomy, National Central University, Jhongli 32001, Taiwan (China)
6. Department of Mathematics, Fu Jen Catholic University, New Taipei City 24205, Taiwan (China)

We report recent XMM-Newton investigations of PSR J1836+5925, the ''next Geminga'', which determined an X-ray pulsation of ∼173.3 ms. Its X-ray periodicity is consistent with the γ-ray ephemeris at the same epoch. The X-ray folded light curve has a sinusoidal structure that is different from the double-peaked γ-ray pulse profile. We have also analyzed the X-ray phase-averaged spectra which shows that the X-ray emission from PSR J1836+5925 is thermal dominant. This suggests that the X-ray pulsation mainly originates from the modulated hot spot on the stellar surface.

• OSTI ID: 22365005
• Journal Information: Astrophysical Journal Letters, Vol. 793, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMIC PHOTONS
DIAGRAMS
GAMMA RADIATION
HOT SPOTS
PERIODICITY
PHOTON EMISSION
PULSARS
PULSATIONS
SURFACES
VISIBLE RADIATION
X RADIATION