Is RX J1856.5-3754 a Quark Star?

  title={Is RX J1856.5-3754 a Quark Star?},
  author={J. Drake and H. Marshall and S. Dreizler and P. Freeman and A. Fruscione and M. Juda and V. Kashyap and F. Nicastro and D. Pease and B. Wargelin and K. Observatory and Mit Center for Space Research and U. Tubingen},
  journal={The Astrophysical Journal},
Deep Chandra Low Energy Transmission Grating and High Resolution Camera spectroscopic observations of the isolated neutron star candidate RX J1856.5-3754 have been analyzed to search for metallic and resonance cyclotron spectral features and for pulsation behavior. As found from earlier observations, the X-ray spectrum is well represented by an ~60 eV (7 × 105 K) blackbody. No unequivocal evidence of spectral line or edge features has been found, arguing against metal-dominated models. The data… Expand

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