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  4. Searches For Periodic Neutrino Emission From Binary Systems With 22 And 40 Strings Of Icecube
 
research article

Searches For Periodic Neutrino Emission From Binary Systems With 22 And 40 Strings Of Icecube

Abbasi, R.
•
Abdou, Y.
•
Abu-Zayyad, T.
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2012
The Astrophysical Journal

In this paper, we present the results of searches for periodic neutrino emission from a catalog of binary systems. Such modulation, observed in the photon flux, would be caused by the geometry of these systems. In the analysis, the period is fixed by these photon observations, while the phase and duration of the neutrino emission are treated as free parameters to be fit with the data. If the emission occurs during similar to 20% or less of the total period, this analysis achieves better sensitivity than a time-integrated analysis. We use the IceCube data taken from 2007 May 31 to 2008 April 5 with its 22 string configuration and from 2008 April 5 to 2009 May 20 with its 40 string configuration. No evidence for neutrino emission is found, with the strongest excess occurring for Cygnus X-3 at 2.1 sigma significance after accounting for trials. Neutrino flux upper limits for both periodic and time-integrated emission are provided.

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Type
research article
DOI
10.1088/0004-637X/748/2/118
Web of Science ID

WOS:000302135200046

Author(s)
Abbasi, R.
Abdou, Y.
Abu-Zayyad, T.
Ackermann, M.
Adams, J.
Aguilar, J. A.
Ahlers, M.
Allen, M. M.
Altmann, D.
Andeen, K.
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Date Issued

2012

Published in
The Astrophysical Journal
Volume

748

Issue

2

Start page

118

Subjects

astroparticle physics

•

binaries: general

•

neutrinos

•

Gamma-Ray Emission

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High-Energy Emission

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Ls I+61-Degrees 303

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X-Ray

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Cygnus X-1

•

Discovery

•

Microquasar

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Variability

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Periastron

•

Telescope

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPHE  
Available on Infoscience
May 4, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/80029
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