Deformed neutron stars and their characteristics in electromagnetic and gravitational radiation

Abstract: The shape of a neutron star (NS) is closely linked to its internal structure and the equation of state of supranuclear matters. In the first part of the talk, we will present the results that extend previous work and describe the free precession of a triaxially deformed NS. Such a NS is a unique object that carries abundant information for multimessenger observation, as the free precession could manifest in, (i) the spectra of continuous gravitational waves, and (ii) the timing behavior and pulse-profile of pulsars. Then, in the second part, we consider violation of Lorentz invariance, one of the fundamental principles in General Relativity, as one possible beyond-the-standard-model origin for the deformation of a NS. An estimate for the continuous gravitational waves from such a source will be made

astrophysicscondensed mattergeneral relativity and quantum cosmologyhigh energy physicsmathematical physicsclassical physicsgeneral physics

Audience: researchers in the topic

Theoretical physics seminar @ Tartu