Quark-nova

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A quark-nova is the

hypothetical violent explosion resulting from the conversion of a neutron star to a quark star. Analogous to a supernova heralding the birth of a neutron star, a quark nova signals the creation of a quark star. The term quark-novae was coined in 2002 by Dr. Rachid Ouyed (currently at the University of Calgary, Canada)[1] and Drs. J. Dey and M. Dey (Calcutta University, India).[2]

The nova process

When a neutron star spins down,[

gamma ray bursts. According to Jaikumar and collaborators, they may also be involved in producing heavy elements such as platinum through r-process nucleosynthesis.[4]

Candidates

Rapidly spinning neutron stars with masses between 1.5 and 1.8

Hubble time. This amounts to a small fraction of the projected neutron star population. A conservative estimate based on this, indicates that up to two quark-novae may occur in the observable universe each day.[citation needed
]

Hypothetically, quark stars would be radio-quiet, so

radio-quiet neutron stars may be quark stars.[citation needed
]

Observations

Direct evidence for quark-novae is scant; however, recent observations of supernovae SN 2006gy, SN 2005gj and SN 2005ap may point to their existence.[5][6]

See also

  • QCD matter, also known as quark matter – Hypothetical phases of matter
  • Quark-degenerate matter
     – Type of dense exotic matter in physics
  • SN 2006gy – 2006 hypernova in constellation Perseus
  • SN 2005gj – Supernova event observed on September 29, 2005

References

  1. ^ "Quark Nova Project". Retrieved 13 Sep 2018.
  2. S2CID 124427846
    .
  3. ^ "Theories of Quark-novae". Archived from the original on October 7, 2012. Retrieved 11 Feb 2009.
  4. S2CID 119093518
    .
  5. ^ Astronomy Now Online - Second Supernovae Point to Quark Stars
  6. S2CID 15696112
    .

External links
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