DETECTING BINARY NEUTRON STARS WITH LIGO GERGELY D LYA ELTE Dept. - PowerPoint PPT Presentation

DETECTING BINARY NEUTRON STARS WITH LIGO GERGELY D Á LYA ELTE Dept. of Atomic Physics ELFT Astroparticle Summer School 09/05/2018

FURTHER DETECTORS

SOURCE LOCALIZATION 2 aLIGO: ~100 sqdeg, aLIGO + AdV: ~10 sqdeg

SOURCE LOCALIZATION ~200 galaxies; with distance information: 15 within 1 sigma

GLADE CATALOG - MOTIVATION GWGC GLADE No . of galaxies 50 000 3 000 000 Complete to 30 Mpc 37 Mpc Cutoff @ 100 Mpc no cutoff

GLADE CATALOG - COMPILATION 2 MASS XSC ~1.6 million gx, no distance or B magnitude 2 MPZ ~900 000 galaxies, photo-z and B mag HyperLEDA ~2.6 million galaxies, spectro-z SDSS-DR 12 Q ~300 000 quasars, spectro-z or photo-z

GLADE CATALOG - COMPILATION CROSS-MATCHING Chi-squared probe with 4 parameters (RA, dec, z, B) PECULIAR VELOCITY CORRECTION For cosmological applications

GLADE CATALOG - STATISTICS 3 million galaxies, 300 000 quasars, 150 globular clusters

GLADE CATALOG - COMPLETENESS I. Comparing the total B luminosity of GLADE galaxies to the expected

GLADE CATALOG - COMPLETENESS II. Dividing the galaxies into 12 distance shells and comparing their integrated luminosity to that of the Schechter function

GLADE CATALOG - COMPLETENESS II. Dividing the galaxies into 12 distance shells and comparing their integrated luminosity to that of the Schechter function

HOW DOES A DETECTION LOOK LIKE?

CHIRPS ON THE SPECTROGRAM Matched filtering Burst searches Online & offline analyses

GLITCH IN LIVINGSTON Once in every hour, well-modeled

GW170817 ~40 Mpc distance: the closest one! 1.6 and 1.1 solar masses SNR=32, 100 s length Fermi & INTEGRAL: GRB EM counterparts? Alerting partner observatories

GW170817 - LOCALIZATION

GW170817

GW170817

GW170817