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SUMMARY:Stellar core collapse in scalar-tensor theory with massive fields 
 - Roxana Rosca (University of Cambridge)
DTSTART:20180601T120000Z
DTEND:20180601T130000Z
UID:TALK106624@talks.cam.ac.uk
CONTACT:Michalis Agathos
DESCRIPTION:Though General Relativity has been successfully tested so far\
 , concepts such as dark energy and string theory suggest the need of modif
 ying it. Scalar-tensor theory is one of the most popular alternatives disc
 ussed. The key motivation for looking at the ones with massive fields is t
 hat they are far less constrained by binary pulsar observations\, in contr
 ast to the massless case. In this talk\, I will demonstrate studies in ste
 llar core collapse in spherical symmetry\, that were performed by adapting
  the numerical code "GR1D":https://stellarcollapse.org/GR1D to the case of
  massive scalar-tensor gravity. The addition of a mass term allows\, withi
 n present constraints\, much stronger gravitational wave emission than in 
 the massless case\, while the dispersion in the propagation of the scalar 
 leads to a quasi-monochromatic signal\, potentially detectable by LIGO/Vir
 go with existing analysis pipelines.
LOCATION:Pavilion B Potter Room (B1.19)
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