Search for neutrinos from gamma-ray bursts with the Baikal neutrino telescope NT200

We present the results of our search for neutrino events coinciding in time and direction with gamma-ray bursts (GRBs) with the Baikal underwater neutrino telescope NT200. No events confirming a neutrino accompaniment of GRBs have been detected. Model-independent limits (Greens function) on the neutrino flux from GRBs have been obtained. For the Waxman-Bahcall neutrino spectrum, the limit on the neutrino flux from a GRB has been found to be E 2 ν Φ ν ⩽ 1.1 × 10−6 GeV cm−2 s−1 sr−1

A device for detection of acoustic signals from super high energy neutrinos.

We present the design of a device for detection of acoustic signals from high energy particle showers. The module will be stationary installed above the Baikal Neutrino Telescope NT-200+

Searches for almost vertically upgoing muons in a Lake Baikal deep-underwater experiment

A method for selecting collisions involving atmospheric neutrinos and resulting in the emission of almost vertically upgoing muons is proposed and implemented by analyzing data from the deep-underwater neutrino telescopes NT-36 and NT-96. On the basis of data collected by the deep-underwater neutrino telescope NT-96 over a 0.192-year operation period, an upper limit has been imposed on the flux of muons that may originate from the annihilation of neutralino pairs in the core of the Earth

An upper limit on the diffuse flux of high energy neutrinos obtained with the Baikal detector NT-96

We present the results of a search for high-energy neutrinos with the Baikal underwater Cherenkov detector NT-96. An upper limit on the diffuse flux of ν e + ν μ + ν μ ̄ of E 2 Φ ν (E)<1.4×10 −5 cm −2 s −1 sr −1 GeV within neutrino energy range 10 4 –10 7 GeV is obtained, assuming an E −2 behavior of the neutrino spectrum