SIMBAD references

2007A&A...473..357O - Astronomy and Astrophysics, volume 473, 357-368 (2007/10-2)

Quark-nova remnants. I. The leftover debris with applications to SGRs, AXPs, and XDINs.


Abstract (from CDS):

We explore the formation and evolution of debris ejected around quark stars in the Quark Nova scenario, and the application to Soft Gamma-ray Repeaters (SGRs) and Anomolous X-ray Pulsars (AXPs). If an isolated neutron star explodes as a Quark Nova, an iron-rich shell of degenerate matter forms from its crust. This model can account for many of the observed features of SGRs and AXPs such as: (i) the two types of bursts (giant and regular); (ii) the spin-up and spin-down episodes during and following the bursts with associated increases in {dot}(P); (iii) the energetics of the boxing day burst, SGR1806+20; (iv) the presence of an iron line as observed in SGR1900+14; (v) the correlation between the far-infrared and the X-ray fluxes during the bursting episode and the quiescent phase; (vi) the hard X-ray component observed in SGRs during the giant bursts, and (vii) the discrepancy between the ages of SGRs/AXPs and their supernova remnants. We also find a natural evolutionary relationship between SGRs and AXPs in our model which predicts that the youngest SGRs/AXPs are the most likely to exhibit strong bursting. Many features of X-ray Dim Isolated Neutron stars (XDINs) are also accounted for in our model such as, (i) the two-component blackbody spectra; (ii) the absorption lines around 300eV; and (iii) the excess optical emission.

Abstract Copyright:

Journal keyword(s): dense matter - accretion, accretion disks - stars: pulsars: general - X-rays: bursts - elementary particles

CDS comments: Abstract SGR 1806+20 is a misprint for SGR 1806-20.

Simbad objects: 17

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