The puzzles of RX J1856.5-3754: neutron star or quark star?

@article{Truemper2003ThePO,
  title={The puzzles of RX J1856.5-3754: neutron star or quark star?},
  author={Joachim E. Truemper and Vadim Burwitz and Frank Haberl and Vyacheslav E. Zavlin},
  journal={arXiv: Astrophysics},
  year={2003},
  volume={132},
  pages={560-565}
}

Figures and Tables from this paper

Constraining the geometry of the neutron star RX J1856.5−3754

RX J1856.5-3754 is one of the brightest, nearby isolated neutron stars (NSs), and considerable observational resources have been devoted to its study. In previous work, we found that our latest

Magnetic hydrogen atmosphere models and the neutron star RX J1856.5–3754

RX J1856.5−3754 is one of the brightest nearby isolated neutron stars (INSs), and consider- able observational resources have been devoted to it. However, current models are unable to satisfactorily

Observations of Cooling Neutron Stars

Observations of cooling neutron stars allow to measure photospheric radii and to constrain the equation of state of nuclear matter at high densities. In this paper we concentrate on neutron stars,

Thin magnetic hydrogen atmospheres and the neutron star RX J1856.5–3754

RX J1856.5–3754 is one of the brightest nearby isolated neutron stars, and considerable observational resources have been devoted to it. However, current models are unable to satisfactorily explain

RX J1856.5-3754 as a possible strange star candidate

Abstract RX J1856.5-3754 has been proposed as a strange star candidate due to its very small apparent radius measured from its X-ray thermal spectrum. However, its optical emission requires a much

Does Submillisecond Pulsar XTE J1739−285 Contain a Weak Magnetic Neutron Star or Quark Star?

The possible detection of the fastest spinning nuclear‐powered pulsar XTE J1739−285, of frequency 1122 Hz (0.8913 ms), arouses us to constrain the mass and radius of its central compact object and to

X-ray bursting neutron star atmosphere models: spectra and color corrections

Aims. X-ray bursting neutron stars in low-mass X-ray binaries constitute an appropriate source class for constraining the masses and radii of neutron stars, but a sufficiently extended set of

Models of magnetized neutron star atmospheres

High-Density Skyrmion Matter and Neutron Stars

We examine neutron star properties based on a model of dense matter composed of B = 1 skyrmions immersed in a mesonic mean field background. The model realizes spontaneous chiral symmetry breaking
...

References

SHOWING 1-10 OF 26 REFERENCES

The optical counterpart of the isolated neutron star RX J185635−3754

The extreme densities of neutron stars make them an ideal system in which to investigate the equation of state of nuclear matter; accurate determinations of neutron star masses and radii are crucial

RX J1856–3754: Evidence for a Stiff Equation of State

We have examined the soft X-ray plus optical/UV spectrum of the nearby isolated neutron star RX J1856-3754, comparing it with detailed models of a thermally emitting surface. Like previous

The Chandra LETGS high resolution X-ray spectrum of the isolated neutron star RX J1856.5-3754

We present the Chandra LETGS X-ray spectrum of the nearby (~60 pc) neutron star RX J1856.5-3754. Detailed spectral analysis of the combined X-ray and optical data rules out the nonmagnetic neutron

Optical Observations of the Isolated Neutron Star RX J0720.4–3125

RX J0720.4-3125 is an unidentified bright, soft X-ray source that shows pulsations at an 8.39 s period and has a thermal spectrum. We present deep B- and R-band images of its X-ray localization. We

Toward a Mass and Radius Determination of the Nearby Isolated Neutron Star RX J185635–3754

We discuss efforts to determine the mass, radius, and surface composition of the nearby compact object RX J185635-3754 from its multiwavelength spectral energy distribution. We compute nonmagnetized

An unusual Hα nebula around the nearby neutron star RX J1856.5-3754

We present spectroscopy and Hα imaging of a faint nebula surrounding the X-ray bright, nearby neutron star RX J1856.5-3754 . The nebula shows no strong lines other than the hydrogen Balmer lines and

The Thermal radiation of the isolated neutron star RX J1856.5-3754 observed with Chandra and XMM-Newton

We present results of the analysis of data collected in 57-ks XMM-Newton and 505-ks Chandra observations of the nearby ($\simeq $120 pc) isolated neutron star RX J1856.5–3754. We confirm most of the

Multiwavelength Observations of Isolated Neutron Stars as a Tool to Probe the Properties of Their Surfaces

We show that an analysis of multiwavelength observations of isolated neutron stars based on neutron star atmosphere models can be used not only to evaluate the neutron star effective temperature, but

A Revised Parallax and Its Implications for RX J185635–3754

New astrometric analysis of four Wide Field Planetary Camera 2 images of the isolated neutron star RX J185635-3754 shows that its distance is 117 ± 12 pc, nearly double the originally published

Timing analysis of the isolated neutron star RX J0720.4-3125

It is found that RX J0720.4-3125 can have been born as a magnetar provided that it has a young age of similar to 10(4) yr, and the field strength has remained relatively unchanged at just over 10(13) G, over the similar to10(6)-yr lifetime of the star.