Possible evidence of surface vibration of strange stars from stellar observations

Details Possible evidence of surface vibration of strange stars from stellar observations Possible evidence of surface vibration of strange stars from stellar observations

2004-06-07

arxiv.org/abs/astro-ph/0406162v1

Mon.Not.Roy.Astron.Soc. 353 (2004) 825

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, using mn2e.cls. Accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2004.08111.x

Emission lines in the eV and keV range by certain stellar candidates from their recent analysis invoke the question of their possible origin. These stars under consideration, are the 4U 0614+091 (0.65, 0.86, and 1.31 keV), 2S 0918-549 (0.8 keV with width 55 eV), 4U 1543-624 (0.7 keV), 4U 1850-087 (0.7 keV) and 4U 1820-30 (0.6 and 0.9 keV) and also the 0.6 keV excess emission in RX J170930.2-263927. Recently, it has been suggested that the resonance absorption at ~ in 0.7, 1.4, 2.1 and 2.8 keV 1E1207-5209 and 0.35, 0.7 and 1.4 keV RX J1856.5-3754 are due to harmonic surface vibrations in strange stars. We propose that these harmonic vibrations may also responsible for emission lines in the above mentioned compact stellar candidates.

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