SLIDE 1
MULTIMESSENGER IMPLICATIONS OF BNS DETECTIONS
GERGELY DÁLYA ELTE Dept. of Atomic Physics
ELFT Astroparticle Summer School 09/06/2018
MULTIMESSENGER IMPLICATIONS OF BNS DETECTIONS GERGELY D LYA ELTE - - PowerPoint PPT Presentation
MULTIMESSENGER IMPLICATIONS OF BNS DETECTIONS GERGELY D LYA ELTE - - PowerPoint PPT Presentation
MULTIMESSENGER IMPLICATIONS OF BNS DETECTIONS GERGELY D LYA ELTE Dept. of Atomic Physics ELFT Astroparticle Summer School 09/06/2018 MULTIMESSENGER ASTRONOMY ANATOMY OF A BNS MERGER WHAT ABOUT NEUTRINOS? May accelerate cosmic rays to high
SLIDE 2
SLIDE 3
ANATOMY OF A BNS MERGER
SLIDE 4
WHAT ABOUT NEUTRINOS?
May accelerate cosmic rays to high energies --> GeV-EeV neutrinos
IceCube ANTARES Pierre Auger Observatory
SLIDE 5
WHAT ABOUT NEUTRINOS?
Detection of neutrinos: restrict E dissipation mechanisms & hadronic densities No coincident neutrino was found in the end...
SLIDE 6
TESTING KILONOVA MODELS
Rapid decline in the bluest bands
SLIDE 7
BLACKBODY FITS
Photometric fit Spectroscopic fit
SLIDE 8
TESTING KILONOVA MODELS
Contains Fe-group or light r-process nuclei Peak at optical wavelengths Short timescale: ~ 1 day
"Blue" kilonova "Red" kilonova
A>140 heavy lanthanide elements Peak at NIR wavelengths Longer timescale: ~ 1 week
Two-component ejecta models fit the data
SLIDE 9
TESTING KILONOVA MODELS II
Single-component ejecta model?
SLIDE 10
TESTING KILONOVA MODELS II
SLIDE 11
R-PROCESS ELEMENTS
SLIDE 12
R-PROCESS ELEMENTS
Red: all r-process element in the Solar system is created by BNS mergers!
SLIDE 13
H0 TENSION
SLIDE 14
STANDARD SIREN MEASUREMENT
GW: distance, EM: recession velocity -- does not require a ladder!
SLIDE 15
STANDARD SIREN MEASUREMENT
GW polarization --> binary inclination; thanks to Virgo!
SLIDE 16
STATISTICAL H0
SLIDE 17
STATISTICAL H0
SLIDE 18
STATISTICAL H0
Question of weighting -- B magnitude or stellar mass?
SLIDE 19
BNS MERGER RATES
Total stochastic background from BNS ~ from BBH They should be detectable at design sensitivity
SLIDE 20
REMNANT SCENARIOS
1) Prompt collapse to BH 2) Long-term stable NS 3) Supermassive NS --> collapse to BH