5-9 October 2020
Online
Europe/Moscow timezone
The conference is over. We would like to thank all participants for their attendance!

Neutron Stars Structure in the Era of Multi-Messenger Astronomy

6 Oct 2020, 16:15
35m
Plenary (Zoom)

Plenary

Zoom

https://zoom.us/j/97430066756
Oral talk Gravitation and cosmology Plenary

Speaker

Farrukh Fattoyev (Manhattan College)

Description

The first direct detection of gravitational waves from the binary collision of two black holes and the first detection of gravitational waves from GW170817, a binary neutron star merger in association with its electromagnetic counterpart, launched the new era of gravitational-wave astronomy. Two years after GW170817, the LIGO-Virgo collaboration continues to mesmerize the physics community when they recently reported the detection of gravitational waves from the coalescence of a binary system, GW190814, with the most extreme mass ratio ever observed: a 23 solar mass black hole and a 2.6 solar mass “compact” object. Besides gravitational waves, the ground- and space-based telescopes operating at a variety of wavelengths have already been providing a treasure trove of insights into the nature of dense matter comprising stellar objects. And together, these observations are answering some of the most fundamental questions concerning neutron stars: What is the nature of dense matter found in neutron stars? What is the maximum mass of a neutron star? How compact are compact objects? In this plenary session, I will discuss recent progress in constraining the bulk properties of neutron stars from gravitational waves and electromagnetic observations. In particular, I will present our work on constraining the equation of state of dense matter from these observations, and our finding on the upper limit of the neutron-star radius as imposed by the tidal polarizability inferred from the gravitational wave observations. I will also discuss our recent findings on the maximum theoretical neutron star mass as predicted by the state-of-art equation of state from covariant density functional whose model parameters are constrained by the latest nuclear experimental data. Finally, I will discuss some possible tension arising between theoretical model predictions and astrophysical observations of neutron stars.

Primary author

Farrukh Fattoyev (Manhattan College)

Presentation Materials

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