Four hints and test candidates of the local cosmic expansion

The expansion of the universe on short distance scales is a new frontier to investigate dark energy. excess orbital decay in binary pulsars may be related acceleration by local cosmic expansion, called drag. Modern observations two independent binaries (PSR B1534+12 and PSR B1913+16) support this interpretation result scale-independent with viscous uniformity, which systems have smaller rate than Hubble constant. This paper shows additional evidential J1012–5307 J1906+0746), supporting drag picture. total anomaly conventional model about 3.6? including reported before. In addition, an observable range has been calculated for typical models both NS–NS NS–WD binary. region, six test candidates are listed predictions decay.