%0 Generic %1 maselli2019white %A Maselli, Andrea %A Marassi, Stefania %A Branchesi, Marica %D 2019 %K tifr %T White dwarf binaries and decihertz gravitational wave observations: from the Hubble constant to the supernova astrophysics %U http://arxiv.org/abs/1910.00016 %X Coalescences of binary white dwarfs represent a copious source of information for gravitational wave interferometers operating in the decihertz band. Moreover, according to the double degenerate scenario, they have been suggested as possible progenitors of supernovae (SNe) Type Ia events. In this paper we discuss the detectability of gravitational waves emitted by the inspiral of double white dwarfs. We focus on the constraints that can be derived on the source's luminosity distance, finding that decihertz interferometers can measure this parameter with relative accuracy better than $1\%$ for binaries at 200 Mpc. We explore the possibility of coincident detections of gravitational and electromagnetic signals, the latter coming from the observation of the supernova counterpart. Confirmation of the double degenerate scenario would allow to use distances inferred in the gravitational wave channel to consistently calibrate SNe as standard candles. We show how multi-messenger observations can put strong constraints on the Hubble constant, tighter than current bounds at low redshift, and potentially able to shed new light on the differences with early universe measurements.

@misc{maselli2019white, abstract = {Coalescences of binary white dwarfs represent a copious source of information for gravitational wave interferometers operating in the decihertz band. Moreover, according to the double degenerate scenario, they have been suggested as possible progenitors of supernovae (SNe) Type Ia events. In this paper we discuss the detectability of gravitational waves emitted by the inspiral of double white dwarfs. We focus on the constraints that can be derived on the source's luminosity distance, finding that decihertz interferometers can measure this parameter with relative accuracy better than $1\%$ for binaries at 200 Mpc. We explore the possibility of coincident detections of gravitational and electromagnetic signals, the latter coming from the observation of the supernova counterpart. Confirmation of the double degenerate scenario would allow to use distances inferred in the gravitational wave channel to consistently calibrate SNe as standard candles. We show how multi-messenger observations can put strong constraints on the Hubble constant, tighter than current bounds at low redshift, and potentially able to shed new light on the differences with early universe measurements.}, added-at = {2019-10-02T08:10:12.000+0200}, author = {Maselli, Andrea and Marassi, Stefania and Branchesi, Marica}, biburl = {https://www.bibsonomy.org/bibtex/20b89db0c47c8ec65b8fc2f10407f2c93/citekhatri}, description = {White dwarf binaries and decihertz gravitational wave observations: from the Hubble constant to the supernova astrophysics}, interhash = {c7c6a55ae058f8e19bd7ea1fc9b088a0}, intrahash = {0b89db0c47c8ec65b8fc2f10407f2c93}, keywords = {tifr}, note = {cite arxiv:1910.00016Comment: 11 pages, 6+2 fugures}, timestamp = {2019-10-02T08:10:12.000+0200}, title = {White dwarf binaries and decihertz gravitational wave observations: from the Hubble constant to the supernova astrophysics}, url = {http://arxiv.org/abs/1910.00016}, year = 2019 }