wolfgang rhode- latest results of amanda
TRANSCRIPT
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
1/22
AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
2/22
AMANDA
Latest Resultsof AMANDA
Wolfgang Rhode
Universitt Dortmund
Universitt Wuppertal
for the AMANDA Collaboration
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
3/22
AMANDA
South Pole
Dark sector
AMANDA
Dome
Runway
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
4/22
Neutrino Telescope in the Ice
1997:
AMANDA-B10
302 OMs on 10 Strings
2000:
AMANDA-II
677 OMs on 19 Strings
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
5/22
Single atmospheric Muons
Energy spectrum from
the light depositionDepth intensity relation
1.061.2 =
Absolute Flux understood within 30% (CR-Flux*Prim. Int.)
Energy Spectrum understood within 10% (dEph/dx*PM-Efficiency)
ICRC 2003: Desiati for AMANDA ICRC 2003: Geenen for AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
6/22
Cosmic Ray Proton Flux Measurement
Energy spectrum from thelight deposition (QGSJET)Ice property indepent analysis
(H) = 2.70 0.02
0 (H) = 0.106(7) m-2s-1sr-1TeV-104.070.2 =
ICRC 2003: Chirkin for AMANDA ICRC 2003: Geenen for AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
7/22
Multiple Muons and Surface Electrons
preliminary
1 km
2 km
AMAN
DA(numberofmuons)
Spase (number of electrons)
Iron
Proton
log(E/P
eV)
Measurement of the Cosmic RayComposition at the Knee with
SPASE-2 and AMANDA II
400 TeV 6 PeV:
Increase of the Atomic Mass
ICRC 2003: Rawlins for AMANDA & SPASE
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
8/22
B10: Observation of high-energy atm. neutrinos
AMANDA B 10: 350 /year
Observation of high-energy neutrinos using Cherenkov detectors embedded deep in Antarctic ice,
Ahrens et al., Nature 410, 2001, 441Observation of high energy atmospheric neutrinos with the Antarctic muon and neutrino detector
array, Ahrens et al., Phys. Rev. D. 66, 2002, 012005
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
9/22
Atmospheric neutrinos with AMANDA II
2000:679
horizontal
Sensitivity up to the horizon.
High energy selection in favor of astrophysical neutrinos.
Selection optimized in declination bands.
ICRC 2003: Hauschildt & Steele for AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
10/22
Atmospheric Neutrino Spectrum Measured
with the AMANDA II Detector
Combination of
Neural network constructed energysensitive variable
Directly measured variables
as input of regularized unfolding
Spectrum up to 100 TeV
compatible with Frejus data
presently no sensitivity to LSND/Nunokawa
prediction of dip structures between 0.4-3 TeV
in future: excess studies at high energies
ICRC 2003: Geenen for AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
11/22
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
12/22
Search for High Energy Neutrinos of All Flavors
with AMANDA II
Flavor mixing:
Signature:electromagnetic/hadronic cascade
within the detector
Data: 197 days (2000)
Limit: 80 TeV < E < 7 PeV
ICRC 2003: Kowalski for AMANDA
Search for neutrino-induced cascades with the AMANDA detector, Ahrens et al.,
Phys. Rev. D 67, 2003, 012003
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
13/22
B10 Limit on UHE Muon-Neutrinos
E > 10 PeV: Earth opaque for
neural net cut parameter ->
signal
Signature:~ horizontal UHE events
Background:atm. muon bundles
Limit: 2.5 PeV < E < 5.6 EeV
AMANDA sensitive to upwardhemisphere above 1 PeV
ICRC 2003: Hundertmark for AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
14/22
Search for extraterrestrial point sources
ICRC 2003: Hauschildt & Steele for AMANDA
Search for Point Sources of high-energy neutrinos with AMANDA, Ahrens et al., Ap. J. 583,
2003, 1040
A II
B10
3 Ice
1.19.858.8Cas. A
3.14.941.0Cyg. X-3
1.69.539.8Mkn 501
3.111.238.2Mkn 4212.14.222.0Crab
0.917.012.4M87
0.6-5.0SS433
A IIB 10dec.[deg]Source
declination averaged limit:
lim 2.310-8 cm-2s-1
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
15/22
Search for Muons from WIMP Annihilation in
the Center of the Earth with AMANDA B10
ICRC 2003: Olbrechts for AMANDA
Limits to the muon flux from WIMP annihilation in the center of the Earth with the
AMANDA detector, Ahrens et al., Phys. Rev. D, 66 2002, 032006
130 days
DAMA187 days
1999
1997
No WIMP signal observed !
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
16/22
Search for High Energy Muon Neutrinos
from Gamma-Ray Bursts
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
17/22
ICRC 2003: Feser for AMANDA
Search for supernova neutrino bursts with the AMANDA detector, Ahrens et al.,
Astropart. Phys. 16, 2002, 345
B10: 60% of the Galaxy
A-II: 95% of the Galaxy
IceCube: up to LMC
Amanda-II
Amanda-B10
IceCube
0 5 10 sec
Count rates
Search for Neutrino Bursts from Supernovae
AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
18/22
AMANDANew AMANDA-II DAQ
ICRC 2003: Wagner for AMANDA
AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
19/22
AMANDA
Conclusions
Improvement of the Analysis
Substantial improvement of the DAQ (2003)
Observed: atm. and
Not observed: HE flux excess, point sources,
GRB, WIMPs, Monopoles, SN, SNR...
Best limits on additional processes Exclusion of theoretical models
IceCube...
AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
20/22
AMANDA
South PoleSouth Pole
Dark sector
AMANDA
IceCubePlanned Location 1 km east
Dome
Skiway
- 80 Strings
- 4800 PMTs
- 1 km3
- 2004 - 2010
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
21/22
New ReactionsNew Reactions
e + N e- + X + N
- + X
electron cascade
375 TeV 300 m diameter
PeV (300 m)
decays
double bang event
AMANDA
-
8/3/2019 Wolfgang Rhode- Latest Results of AMANDA
22/22