uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Time-dependent searches for point sources of neutrinos with the 40-string and 22-string configurations of IceCube
Show others and affiliations
2012 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 744, no 1, 1- p.Article in journal (Refereed) Published
Abstract [en]

This paper presents four searches for flaring sources of neutrinos using the IceCube neutrino telescope. For the first time, a search is performed over the entire parameter space of energy, direction, and time with sensitivity to neutrino flares lasting between 20 mu s and a year duration from astrophysical sources. Searches that integrate over time are less sensitive to flares because they are affected by a larger background of atmospheric neutrinos and muons that can be reduced by the use of additional timing information. Flaring sources considered here, such as active galactic nuclei, soft gamma-ray repeaters, and gamma-ray bursts, are promising candidate neutrino emitters. Two searches are "untriggered" in the sense that they look for any possible flare in the entire sky and from a predefined catalog of sources from which photon flares have been recorded. The other two searches are triggered by multi-wavelength information on flares from blazars and from a soft gamma-ray repeater. One triggered search uses lightcurves from Fermi-LAT which provides continuous monitoring. A second triggered search uses information where the flux states have been measured only for short periods of time near the flares. The untriggered searches use data taken by 40 strings of IceCube between 2008 April 5 and 2009 May 20. The triggered searches also use data taken by the 22-string configuration of IceCube operating between 2007 May 31 and 2008 April 5. The results from all four searches are compatible with a fluctuation of the background.

Place, publisher, year, edition, pages
2012. Vol. 744, no 1, 1- p.
Keyword [en]
astroparticle physics, cosmic rays, neutrinos
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-167162DOI: 10.1088/0004-637X/744/1/1ISI: 000298408300001OAI: oai:DiVA.org:uu-167162DiVA: diva2:487308
Available from: 2012-01-31 Created: 2012-01-23 Last updated: 2015-06-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Botner, OlgaEngdegård, OlleHallgren, AllanPérez de los Heros, CarlosTaavola, Henric
By organisation
High Energy Physics
In the same journal
Astrophysical Journal
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 192 hits
ReferencesLink to record
Permanent link

Direct link