Among the first attempts to detect gravitational waves, the seismic approach pre-dates the digital era. Major advances in computational power, seismic instrumentation and in the knowledge of seismic noise suggest to reappraise its potential. Using the whole earth as a detector, with the thousands of digital seismometers of seismic global networks as a single phased array, more than two decades of continuous seismic noise data are available and can be readily sifted at the only cost of (a pretty gigantic) computation. Using a subset of data, we show that absolute strains h less than or similar to 10(-17) on burst gravitational pulses and h less than or similar to 10(-21) on periodic signals may be feasibly resolved in the frequency range 0.1-10 Hz, only marginally covered by current advanced LIGO and future eLISA. However, theoretical predictions for the largest cosmic gravitational emissions at these frequencies are a few orders of magnitude lower.

Mulargia, F., Kamenchtchik, A. (2016). The gravitational resolving power of global seismic networks in the 0.1-10 Hz band. PHYSICS LETTERS A, 380, 1503-1507 [10.1016/j.physleta.2016.02.032].

The gravitational resolving power of global seismic networks in the 0.1-10 Hz band

MULARGIA, FRANCESCO;KAMENCHTCHIK, ALEXANDR
2016

Abstract

Among the first attempts to detect gravitational waves, the seismic approach pre-dates the digital era. Major advances in computational power, seismic instrumentation and in the knowledge of seismic noise suggest to reappraise its potential. Using the whole earth as a detector, with the thousands of digital seismometers of seismic global networks as a single phased array, more than two decades of continuous seismic noise data are available and can be readily sifted at the only cost of (a pretty gigantic) computation. Using a subset of data, we show that absolute strains h less than or similar to 10(-17) on burst gravitational pulses and h less than or similar to 10(-21) on periodic signals may be feasibly resolved in the frequency range 0.1-10 Hz, only marginally covered by current advanced LIGO and future eLISA. However, theoretical predictions for the largest cosmic gravitational emissions at these frequencies are a few orders of magnitude lower.
2016
Mulargia, F., Kamenchtchik, A. (2016). The gravitational resolving power of global seismic networks in the 0.1-10 Hz band. PHYSICS LETTERS A, 380, 1503-1507 [10.1016/j.physleta.2016.02.032].
Mulargia, F.; Kamenchtchik, A.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/537870
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact