BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Measurement of the atmospheric lepton energy spectra with AMANDA-I I DTSTART;VALUE=DATE-TIME:20070709T170500Z DTEND;VALUE=DATE-TIME:20070709T171700Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-624@cern.ch DESCRIPTION:Speakers: LUENEMANN\, Jan (University of Dortmund)\nPotential sources for the ultrahigh energy cosmic ray flux are\nextragalactic source types such as active galactic nuclei and gama ray\nbusts. With the predic tion of hadronic processes in these sources\, a\ndiffuse neutrino flux ca be produced together with the charged cosmic ray\ncomponent. To measure th is diffuse neutrino flux is one of the main goals\nof the Antarctic Muon A nd Neutrino Detector Array (AMANDA-II). The flux\nspectrum based on a 4 ye ar data set (2000-2003) will be presented in this\ntalk. The spectrum foll ows the atmospheric neutrino flux predictions. To\nverify the analysis met hod\, the used regularized unfolding has been\napplied to single downgoing muon events. The determined energy spectrum\nwill be presented.\n\nhttps: //indico.nucleares.unam.mx/event/4/session/109/contribution/624 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/624 END:VEVENT BEGIN:VEVENT SUMMARY:Radiofrequency Ice Properties Measurements at Taylor Dome\, Antarc tica DTSTART;VALUE=DATE-TIME:20070709T171700Z DTEND;VALUE=DATE-TIME:20070709T172900Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-809@cern.ch DESCRIPTION:Speakers: BARWICK\, Steven W. (UC\, Irvine)\nA series of ice p roperties' measurements were made in December\, 2006 in support of\nthe ba lloon-borne ANITA neutrino detection effort. Of particular importance is t he\nelectric field attenuation length in the range 200-1000 MHz as well as signal\ntransmission across the air-ice boundary. We present measurements of the temperature\nprofile over the upper 100 meters of ice\, radiofrequ ency attenuation lengths\, and\nsurface roughness effects on signal propag ation.\n\nhttps://indico.nucleares.unam.mx/event/4/session/109/contributio n/809 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/809 END:VEVENT BEGIN:VEVENT SUMMARY:The ANTARES experiment:sensitivity to dark matter candidates DTSTART;VALUE=DATE-TIME:20070709T172900Z DTEND;VALUE=DATE-TIME:20070709T174100Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-355@cern.ch DESCRIPTION:Speakers: Dr. FALCHINI\, Elisa (INFN Pisa)\nThe ANTARES collab oration is building an undersea neutrino telescope at 2400\nm depth in the Mediterranean Sea. The experiment aims to detect high-energy\ncosmic neut rinos using a 3D array of 900 photomultipliers (PMTs) arranged in\n12 stri ngs. The advantages of neutrinos as astrophysical and cosmic\nmessengers a re that they open a new window to observe known astrophysical\nobjects as well as to look for new Physics\, such as dark matter. In many\nsupersimme tric models\, the favourite dark matter candidate is the lightest\nneutral ino whose annihilation in the core of massive celestial objects can\nlead to the emission of neutrinos in the subsequent decay chains. The\nexpected performance of ANTARES is discussed.\n\nhttps://indico.nucleares.unam.mx/ event/4/session/109/contribution/355 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/355 END:VEVENT BEGIN:VEVENT SUMMARY:A search for upward UHE neutrinos with SHALON atmospheric Cherenko v telescope. DTSTART;VALUE=DATE-TIME:20070709T174100Z DTEND;VALUE=DATE-TIME:20070709T175300Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-66@cern.ch DESCRIPTION:Speakers: Prof. SINITSYNA\, Vera Georgievna (Lebedev Physical Institute)\nProblems in observation of extensive air showers generated by neutrinos are connected\nwith an extremely small cross section of inelasti c collisions of neutrinos with\nnuclei. However\, two facts allow to searc h for showers generated by neutrinos: (1) a\nhadron cascade with the prima ry energy of more than 10^13 eV leaves a mountain ridge\nto the atmosphere from the depth ~ 300g/cm^2 without an essential loss of the total\nenergy in the hadron cascade\, and (2) air Cherenkov radiation from such hadron\ ncascades will be observed with a 7.5 km distant telescope over an area of more than\n7×10^5 m^2. This partially compensates the small cross sectio n of inelastic neutrino\ncollisions. The observation has been carried out since 1992 at high mountainous Tien\n-Shan station with SHALON Cherenkov m irror telescope with ~ 11.2 m^2 mirror area and\nimage matrix of 144 PMT w ith full angle >8^o. The telescope characteristics permitted\nto start the search of local neutrino sources with energy 10^{13} - 10^{16} eV on EAS\ ngenerating in mountain-range located at some 7.5 and more kilometers from \ngamma-telescope (in Russian the abbreviation SHALON means - the Extensiv e Air Showers\nfrom Neutrino). The analysis of results of observation of extensive air showers at\nheight of 3338 m above the sea level by means o f gamma-telescope SHALON at the zenith\nangles 72^o\, 76^o\, 84^o\, 97^o a re presented and compared with the data of detection\nof showers according to the direction into the zenith. The analysis of 260 hours of\nSHALON ob servation of Cherenkov bursts at angle of 97^o results in 5 events from\np ossible source that may be interpreted as Extensive Air Showers from neutr ino\ninteraction products. These cascades look like the usual extensive a ir showers\ngenerated in atmosphere with narrow light shape. The shower en ergies are in the range\nof 6 - 17.5 TeV. Currently\, the fluxes of galac tic gamma-quantum sources Cygnus X-3\,\nTycho's SNR\, Geminga of <10^{-14} cm^{-2}s^{-1} are observed by SHALON. The appearing\nof one shower per >10 0 observation hours is expected if the flux of neutrino from\nlocal source s is 10^{-15}cm^{-2}s^{-1}.\n\nhttps://indico.nucleares.unam.mx/event/4/se ssion/109/contribution/66 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/66 END:VEVENT BEGIN:VEVENT SUMMARY:Status of the RICE experiment DTSTART;VALUE=DATE-TIME:20070709T175300Z DTEND;VALUE=DATE-TIME:20070709T180500Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-659@cern.ch DESCRIPTION:Speakers: KRAVCHENKO\, ilya (MIT)\nThe RICE experiment\, locat ed at the South Pole\, seeks detection of ultra-high energy\nneutrinos bas ed on measurement of the coherent radiofrequency Cherenkov pulse created\n by an englacial neutrino-ice collision. Based on the eight-year dataset no w\naccumulated by RICE\, we report on updated results on the neutrino flux in the >100\nPeV energy range\, limits on neutrino production from gamma- ray bursts\, and searches\nfor ultra-relativistic monopoles. The successor experiment (AURA) will also be\nbriefly discussed.\n\nhttps://indico.nucl eares.unam.mx/event/4/session/109/contribution/659 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/659 END:VEVENT BEGIN:VEVENT SUMMARY:High energy neutrinos from astrophysical sources: a self-consisten t approach DTSTART;VALUE=DATE-TIME:20070709T180500Z DTEND;VALUE=DATE-TIME:20070709T181700Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-288@cern.ch DESCRIPTION:Speakers: Dr. TOMAS\, Ricard (Institut de Fisica Corpuscular ( CSIC-Universitat de Valencia))\nWe calculate the yield and flavor content of high energy neutrinos\nproduced in astrophysical sources with and witho ut magnetic fields\nvarying their interaction depth. \nWe pay special atte ntion to the multiple scattering of secondaries \non background photons as well as the direct production of neutrinos \nin decays of charm mesons. \nIf multiple scattering of nucleons becomes important\, the neutrino spec tra \nfrom meson and muon decays are strongly modified with respect to tra nsparent \nsources. This is the case of optically thick sources as well as thin\nsources with strong enough magnetic fields.\nWe discuss the resulti ng high energy neutrino fluxes.\n\nhttps://indico.nucleares.unam.mx/event/ 4/session/109/contribution/288 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/288 END:VEVENT BEGIN:VEVENT SUMMARY:Cosmogenic Neutrinos from the propagation of Ultra High Energy Cos mic Rays DTSTART;VALUE=DATE-TIME:20070709T181700Z DTEND;VALUE=DATE-TIME:20070709T182900Z DTSTAMP;VALUE=DATE-TIME:20260312T172526Z UID:indico-contribution-109-0-852@cern.ch DESCRIPTION:Speakers: Dr. BUSCA\, Nicolás (APC/University of Chicago)\nWe calculate the flux of neutrinos generated by the propagation of\nultra-hi gh energy nuclei over cosmological distances. The propagation takes into\n account the interactions with cosmic background radiations including the C MB\nand the most recent estimates of higher energy (infra-red\, optical\, and ultra violet)\nbackgrounds. We assume that the composition of ultra-hi gh energy cosmic rays\n(UHECRs) at the source is the same as the observed one at low energies. This\nassumption fits well the present data at the hi ghest energies. We compare the\ncosmogenic neutrino flux from mixed compos ition sources to pure proton sources.\nWe find that the neutrino flux in t he mixed composition case has a high energy\npeak\, mainly due to photopio n production off CMB photons\, of similar shape\nand amplitude to the prot on case. At low energies both composition cases have\nsignificant neutrino flux with a peak around 1014.5 eV due to the higher energy\nbackgrounds. The mixed composition case induces a higher flux of neutrinos\nat energies below 1013 eV due to the neutron decay component that extends\ndown to lo w energies. Detection of diffuse neutrino fluxes at ultra high energies\nc an strongly constrain the source distribution of UHECR whereas fluxes at l ower\nenergies could be used to constrain confinement of VHE and UHE cosmi c rays if\ncombined with composition analysis from cosmic ray experiments. \n\nhttps://indico.nucleares.unam.mx/event/4/session/109/contribution/852 LOCATION:Merida\, Mexico Kabah (Holiday Inn) URL:https://indico.nucleares.unam.mx/event/4/session/109/contribution/852 END:VEVENT END:VCALENDAR