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Constraining the neutrino emission of gravitationally lensed Flat-Spectrum Radio Quasars with ANTARES data

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Constraining the neutrino emission of gravitationally lensed Flat-Spectrum Radio Quasars with ANTARES data

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ANTARES Collaboration; Barrios Martí, Javier; Gómez González, Juan Pablo; Hernández Rey, Juan José; Lambard, Guillaume; Mangano, Salvatore; Sánchez Losa, Agustín; Tönnis, Christoph; Yepes Ramírez, Harold; Zornoza Gómez, Juan de Dios; Zúñiga Román, Juan

Aquest document és un/a article, creat/da en: 2014

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.

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