English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Parity-odd galaxy bispectrum

MPS-Authors
/persons/resource/persons133110

Schmidt,  Fabian
Physical Cosmology, MPI for Astrophysics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Jeong, D., & Schmidt, F. (2020). Parity-odd galaxy bispectrum. Physical Review D, 102(2): 023530. doi:10.1103/PhysRevD.102.023530.


Cite as: http://hdl.handle.net/21.11116/0000-0007-15C2-6
Abstract
he galaxy bispectrum contains a wealth of information about the early universe, gravity, as well as astrophysics such as galaxy bias. Here, we study the parity-odd imaginary part of the galaxy bispectrum which is hitherto largely unexplored. In the standard cosmological model, the odd-parity bispectrum is generated by galaxy velocities through redshift-space distortions, yielding a guaranteed signal which provides a useful consistency test of measurements of galaxy clustering. While small in the case of general relativity coupled with smooth dark energy, the signal could be larger in modified gravity scenarios. Thus, the odd bispectrum offers a clean way for searching for new physics.