Thesis

IDENTIFYING SIGNATURES OF HYBRID STARS

• Call:

  PT-CERN Call 2022/1

• Academic Year:

  2022

• Domain:

  Astroparticle Physics

• Supervisor:

  Constança Providência

• Co-Supervisor:

  TUHIN MALIK

• Institution:

  Universidade de Coimbra

• Host Institution:

  CFISUC - Centro de Fisica da Universidade de Coimbra

• Abstract:

  In recent years, observational capacities have increased enormously. Strong constraints were set on the equation of state (EOS) of dense matter combining the discovery of massive neutron stars (NS) with the results obtained by the LIGO-Virgo gravitational wave (GW) observations of NS mergers and from X-ray observations of pulsars, with the NICER mission. NSs are one of the most interesting laboratories of the Universe, allowing us to study aspects of fundamental physics unreachable otherwise. NS observations will allow us to determine the stellar matter EOS. A second problem is the determination of its constitution since similar EOS may describe different scenarios. The project will answer the question “is deconfined quark matter present in the NS core?”, by studying possible signatures of quark matter. Rotating and non-rotation hybrid star properties will be calculated from hybrid star EOS based on microscopic models. Statistical methods will be applied to distinguish different scenarios.