ar X iv : 1 50 3 . 00 35 4 v 1 [ gr - q c ] 1 M ar 2 01 5 Search for an emission line of a gravitational wave background

نویسندگان

  • Atsushi Nishizawa
  • Naoki Seto
چکیده

In the light of the history of researches on electromagnetic wave spectrum, a sharp emission line of gravitational-wave background (GWB) would be an interesting observational target. Here we study an efficient method to detect a line GWB by correlating data of multiple ground-based detectors. We find that the width of frequency bin for coarse graining is a critical parameter, and the commonly-used value 0.25 Hz is far from optimal, decreasing the signal-to-noise ratio by up to a factor of seven. By reanalyzing the existing data with a smaller bin width, we might detect a precious line signal from the early universe.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Gravitatational Waves in G4v∗

Gravitational coupling of the propagation four-vectors of matter wave functions is formulated in flat space-time. Coupling at the momentum level rather than at the “force-law” level greatly simplifies many calculations. This locally Lorentz-invariant approach (G4v) treats electromagnetic and gravitational coupling on an equal footing. Classical mechanics emerges from the incoherent aggregation ...

متن کامل

ar X iv : 0 80 6 . 01 41 v 2 [ gr - q c ] 5 J an 2 00 9 Quantum induced ω = − 1 crossing of the quintessence and phantom models

Considering the single scalar field models of dark energy, i.e. the quintessence and phantom models, it is shown that the quantum effects can cause the system crosses the ω = −1 line. This phenomenon does not occur in classical level. The quantum effects are described via the account of conformal anomaly.

متن کامل

ar X iv : a st ro - p h / 01 03 43 8 v 1 2 7 M ar 2 00 1 X - rays and accretion discs as probes of the strong gravity of black holes

The observations and interpretation of broad iron lines in the X-ray spectra of Seyfert 1 galaxies are reviewed. The line profiles observed from MCG–6-30-15 and NGC 3516 show extended red wings to the line explained by large gravitational red-shifts. The results are consistent with the emission expected from an X-ray irradiated flat accretion disc orbiting very close to a black hole. Results fr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015