PT Journal
AU ANTARES Collaboration (Adrian-Martinez, Sea
   Barrios-Marti, J
   Gomez-Gonzalez, JP
   Hernandez-Rey, JJ
   Lambard, G
   Mangano, S
   Sanchez-Losa, A
   Tonnis, C
   Yepes, H
   Zornoza, JD
   Zuñiga, J
TI Constraining the neutrino emission of gravitationally lensed Flat-Spectrum Radio Quasars with ANTARES data
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2014
BP 017
EP 12pp
VL 11
IS 11
DI 10.1088/1475-7516/2014/11/017
LA English
DE gravitational lensing; neutrino astronomy
AB This paper proposes to exploit gravitational lensing effects to improve the sensitivity of neutrino telescopes to the intrinsic neutrino emission of distant blazar populations. This strategy is illustrated with a search for cosmic neutrinos in the direction of four distant and gravitationally lensed Flat-Spectrum Radio Quasars. The magnification factor is estimated for each system assuming a singular isothermal profile for the lens. Based on data collected from 2007 to 2012 by the ANTARES neutrino telescope, the strongest constraint is obtained from the lensed quasar B0218+357, providing a limit on the total neutrino luminosity of this source of 1.08 x 10(46) erg s(-1) This limit is about one order of magnitude lower than those previously obtained in the ANTARES standard point source searches with non-lensed Flat-Spectrum Radio Quasars.
ER