AMANDA, a neutrino telescope at the south pole Wolfgang Rhode - - PowerPoint PPT Presentation
AMANDA, a neutrino telescope at the south pole Wolfgang Rhode - - PowerPoint PPT Presentation
AMANDA, a neutrino telescope at the south pole Wolfgang Rhode Universitt Wuppertal AMANDA Collaboration [1] Bartol Research Institute, University of Delaware, Newark, DE, USA [2] DESY-Zeuthen, Zeuthen, Germany [3] Dept. of Physics,
AMANDA Collaboration
[1] Bartol Research Institute, University of Delaware, Newark, DE, USA [2] DESY-Zeuthen, Zeuthen, Germany [3] Dept. of Physics, Stockholm University, Stockholm, Sweden [4] Dept. of Physics, UC Berkeley, Berkeley, CA, USA [5] Dept. of Physics, UC Irvine, Irvine, CA, USA [6] Dept. of Physics, University of Pennsylvania, Philadelphia, PA, USA [7] Dept. of Physics, University of Wisconsin, Madison, WI, USA [8] Dept. of Physics, University of Wuppertal, Wuppertal, Germany [9] Dept. of Technology, University of Kalmar, Kalmar, Sweden [10] Lawrence Berkeley Laboratory, Berkeley, CA, USA [11] Mainz University, Mainz, Germany [12] South Pole Station, Antarctica [13] ULB - IIHE - CP230, Boulevard du Triomphe, B-1050 Bruxelles, Belgium [14] University of Kansas, Lawrence, KS, USA [15] University of Uppsala, Uppsala, Sweden
V.F. Hess 1960; „Strahlungsapparat“ 1927-1931
- W. Kohlhörster measuring in a ice-hole in the Eiger glacier, 1923
- E. Regener,
Bodensee, 1928
- E. Regener,
Bodensee, 1932
Neutrino Telescope in Ice
1997: AMANDA-B10 302 OMs at 10 Strings 2000: AMANDA-B19 680 OMs at 19 Strings
Ice-properties
- ✁
λ
✠ ✡☛ ☛ ☞ ✌✍ ✎✑✏ ✒ ✓ ✓ ✔ ✕ ✖ ☞✗ ✘ ✔ ☞✗ ✓✙≈
✚✛ ✌ ✜✢ ✣✤ ✕✥ ✓ ✖ ✤ ☞ ✘ ✔ ☞✗ ✓✙≈
✦ ☛ ☛ ✌Advantages of ice: “good” energy resolution low noise (300 -1500 Hz) few sensors required detector stable Disadvantages of ice: diffuse, delayed light directional measurement no repair of detector possible!
✧ ★✩ ✪ ✪ ✫✬ ✭ ✮ ✯ ✰ ✫ ✮ ✯ ✪✱ ✲ ✳ ✴ ✵ ✲ ✳ ✶ ✷✹✸✻✺✹✼ ✽ ✾ ✿❁❀50-1
dramatis personae
Background: Atmospheric Muons
- 3-6 o.m. above atm ν
- 5-8 o.m. above new signal.
- Suppression by
– angular resolution – energy resolution
1000 mwe 2000 3000 4000 5000 13000
Test Beam: Atmospheric Muons
γ − Θ ⋅ = E I I cos 1
( )
1 − ⋅ =
bd c
e b a E
( ) ( ) (
)
( )
dE b a E E b a b a E b a d E P
diff c diff c
⋅ ⋅ Φ Θ + + ⋅ − ⋅ Φ Θ + = γ γ , 1 1 1 , 1 ,
Atmospheric Neutrinos
AMANDA ν-candidate
- Early photons are red, late
photons are blue. More photons are larger circles
- Bottom of array is toward
center of earth
- Event is clearly traveling
in the upward direction
Selection criteria
✎ ✔ ✘ ✔ ✏ ✓ ☞ ✤ ✕ ✓✙ ✔ ✕ ☞ ✙ ✔ ✌ ✖ ✣ ✥ ✙ ✔ ✕ ✔ ✓ ✕ ✒ ✏ ❂ ✣ ❃ ✔ ❄❅ ✖ ✕ ✔ ✌ ✖ ☞ ✖ ✌ ✒ ✘ ☞❅ ✌ ✢ ✔ ✕ ✒ ☞ ❆ ❆ ✖ ✣ ✓ ✒ ☞ ✏ ✔ ✤ ❇ ❈ ❅ ☞ ✣ ✏ ✒ ✓ ✓ ✔ ✕ ✔ ❆ ❈ ✥ ✙ ✤ ✓ ✤ ☞ ✣ ❃ ✔ ❄❅ ✖ ✕ ✔ ❉ ✣ ✌ ✤ ✤ ✓✙ ✘ ✖ ✗ ✙ ✓ ✔ ✌ ✖ ✣ ✣ ✖ ✤ ☞ ❈ ❊ ☞ ✤ ✏ ✒ ✓ ✒ ✣ ✓ ✕ ✤ ✥ ✙ ✖ ✏ ✢ ✕ ✔ ✌ ✣●❋ ✌ ✖ ✣ ✕ ✔ ✏●❍ ■ ✔ ✓ ✏ ❍ ❏ ✥ ✓ ✖ ✌ ✖ ❑ ✔ ✏ ❅ ✓ ✣▲ ✒ ✘ ❅ ✔ ✣ ❅ ✣ ✖ ☞✗ ❈ ▼ ◆ ❖P ◗ ✜❘❈ ✒ ✘ ✗ ✤ ✕ ✖ ✓✙ ✌ ✤ ✕ ❅ ✣ ✔ ❙ ✒❚ ✔ ✣ ✖ ✒ ☞ ✥ ✕ ✖ ✤ ✕ ❯❲❱ ❯❳ ❨ ❯❩❬ ❭ ❱ ❩❪ ❨ ❯❩❫ ❴❵ ❴ ❭ ❛ ❜❝ ❞ ❡ ❢ ❡ ❣ ❤ ✐ ✐ ❝ ❣ ❝ ❥ ❝ ❨❦ ❝ ❣ ❤ ❧ ❝ ❞ ❡ ♠ ♥♦ ♣ ✐ ❣ ❱ qr s ❤ ✐ ❞ ♥ t qr ✉ ✉ ❪ ❵ ❱ ❴ ✈ ✇ ❱ ❳ ✉ ❯ ❭ ❱ ❪ ✈ ❴ ❱ ❴ ① ❤ ❡ ②③ ❢ ♦ ❤ t t ♥ ❡ ❤ ④ ❞ ⑤ ❵ ❱ ❴ ✈ ✇ ❱ ❳ ✉ ❪ ⑥ ❱ ❭ ✈ ❴ ❱ ❴ ① ❤ ❡ ② ④⑦ ❡ ④ ❢ ♦ ❤ t t ♥ ❡ ❤ ④ ❞ ✉ ❨ ❯❩ ⑧ ⑨⑩ ❴ ❨ ❯❩ ⑧ ❶ ⑩ ✇ ⑩ ❷ ❝ ❜❝ t ✇ ❯ ❨ ❯❩ ⑧ ❸ ⑩ ❵ ❨ ❯❩ ⑧ ❹ ⑩ ❵ ⑩ ❷ ❝ ❜❝ t ❪ ✇ ❨ ❯❩ ⑧ ❺ ⑩ ✇ ❨ ❯❩ ⑧ ❺ ⑩ ❯ ❴ ⑩ ❷ ❝ ❜❝ t ✉ ❴ ⑩ ✇ ⑩ ❪ ✇ ⑩ ❷ ❝ ❜❝ t ❯Atmospheric Neutrinos
- Continuously data
taking
- Number of candidates
follows the number of trigger
- Seasonal flux variation
Background suppression
❻ ❼ ✒ ✓ ✒ ❽ ❾ ▼ ✒ ✗ ✕ ✔ ✔ ✌ ✔ ☞ ✓ ✒ ✓ ✢ ✔ ✓ ✓ ✔ ✕ ✓✙ ✒ ☞ ✛ ☛ ❿ ✒ ✣ ❇ ❅ ☞ ✏ ✓ ✖ ✤ ☞ ✤ ❇ ✏ ❅ ✓ ✣ ➀ ✥ ✒ ✕ ✒ ✌ ✔ ✓ ✕ ✖ ❑ ✔ ❆ ✢ ❚ ➁ ➂ ➃ ➄ ➄ ➄ ➅ ➆ ✖ ✕ ✣ ✓ ✒ ✗ ✕ ✔ ✔ ✌ ✔ ☞ ✓ ➇ ✖ ✓✙ ✢ ✒ ✏ ❂ ✗ ✕ ✤ ❅ ☞ ❆ ✓✙ ✔ ☞ ➇ ✖ ✓✙ ✣ ✖ ✗ ☞ ✒ ✘ ➅ ❘ ✒ ✕ ✗ ✔ ✣ ✒ ✌ ✥ ✘ ✔ ✤ ❇ ✢ ✒ ✏ ❂ ✗ ✕ ✤ ❅ ☞ ❆ ❾ ▼109 1 106 103
➈ ➉ ➊ ➋ ➌ ➍Zenith distribution of atmospheric neutrinos
➁ ✔ ❅ ✓ ✕ ✖ ☞ ✤ ✤ ✣ ✏ ✖ ✘ ✘ ✒ ✓ ✖ ✤ ☞ ✣ ❊ P ➎ ➏✛ ➐ ✔ ◗ ■ ✕ ✔ ❆ ❅ ✏ ✔ ❇ ✘ ❅ ➑≈
✦ ☛ ❿ ❋ ✣ ✌ ✒ ✘ ✘ ➇ ❍ ✕ ❍ ✓ ❍ ✓ ✤ ❅ ☞ ✏ ✔ ✕ ✓ ✒ ✖ ☞ ✓ ✖ ✔ ✣ ✦ ✛ ❿ ✖ ✏ ✔ ✥ ✒ ✕ ✒ ✌ ✔ ✓ ✔ ✕ ✣ ✦ ☛ ❿ ❊✑➒ ✔ ❇ ❇✑✔ ✏ ✓ ✤ ❇ ✘ ✤ ✏ ✒ ✘ ✢ ❅ ✢ ✢ ✘ ✔ ✣ ■ ➓ ❾ ❖ ✔ ❇ ❇ ✖ ✏ ✖ ✔ ☞ ✏ ❚ ✚ ☛ ❿ ✌ ❅ ✤ ☞ ✕ ✒ ☞✗ ✔ ➔☛ ❿ ☞ ✔ ❅ ✓ ✕ ✖ ☞ ✤ ❇ ✘ ❅ ➑ ◆ ☞ ✏ ✔ ✕ ✓ ✒ ✖ ☞ ✓ ✖ ✔ ✣ ✍Celestial distribution of events
➐ ✒ ✘ ✒ ✏ ✓ ✖ ✏ ✏ ✤ ✤ ✕ ❆ ✖ ☞ ✒ ✓ ✔ ✣ ✍ ✌ ✔ ✒ ☞ ✒ ☞✗ ❅ ✘ ✒ ✕ ✥ ✤ ✖ ☞ ✓ ✖ ☞✗ ✕ ✔ ✣✤ ✘ ❅ ✓ ✖ ✤ ☞ ✖ ✣ ➔ → ✡ ❆ ✔ ✗ ✕ ✔ ✔ ✣ ✜ ❾ ✜ ➁ ❼ ✜ ✤ ☞ ✘ ❚ ✣ ✔ ✔ ✣ ☞ ✤ ✕ ✓✙ ✔ ✕ ☞ ✙ ✔ ✌ ✖ ✣ ✥ ✙ ✔ ✕ ✔ ➣Point Source Search
P ❄❅ ✒ ✓ ✤ ✕ ✖ ✒ ✘ ✏ ✤ ✤ ✕ ❆ ✖ ☞ ✒ ✓ ✔ ✣ ➅ ✦ ☛ ↔↕ ✔ ▲ ✔ ☞ ✓ ✣ ➅ ➁ ✤ ✤ ✢ ▲ ✖ ✤ ❅ ✣ ✏ ✘ ❅ ✣ ✓ ✔ ✕ ✖ ☞✗ ➣ ➅ ✎ ✒ ✌ ✥ ✘ ✔ ❆ ✤ ✌ ✖ ☞ ✒ ✓ ✔ ❆ ✢ ❚ ✏ ✤ ✣ ✌ ✖ ✏ ✌ ❅ ✤ ☞ ✣ ✒ ☞ ❆ ✒ ✓ ✌ ✤ ✣ ✥ ✙ ✔ ✕ ✖ ✏ν
➙ ✣ ✘ ✤ ✤ ✣ ✔ ✕ ✏ ❅ ✓ ✣ ➇ ✖ ✓✙ ✌ ✤ ✕ ✔ ✢ ✒ ✏ ❂ ✗ ✕ ✤ ❅ ☞ ❆ ✖ ✌ ✥ ✕ ✤ ▲ ✔ ✓✙ ✔ ✘ ✖ ✌ ✖ ✓ ➣Is there a significant excess anywhere ?
➛➜ ➝➞ ➟➠➡ ➢ ➤ ➞ ➟ ➥ ➟ ➥ ➟ ➦➧ ➨ ➩ ➛➫ ➫ ➭ ➯ ➲ ➟ ➥ ➳ ➨ ➵ ➸ ➳ ➺ ➧ ➻ ➧ ➨ ➟ ➸ ➠ ➤ ➺ ➼➽ ➺ ➧ ➻ ➧ ➥ ➡ ➧ ➨ ➨ ➢➸ ➥➾ ➳ ➸ ➨ ➡ ➦ ➠ ➯- ✞➚
- ✁
- ✕
AGN
- Components:
- Supermass. Black Hole
- Accretion Disc
- Jets
- Blazar - flat Spectrum
- here: 3C219
- red: radio picture
- blue: optical picture
Neutrino energy acceptance
✤✦✥ ✥ ✧★ ✩ ✧ ✪ ✧✫ ✧✬ ✭✮ ✬ ✯ ✫ ✭ ✧✰ ✱ ✓✙ ✕ ✔ ✣ ✙ ✤ ✘ ❆ ✍ ✛ ☛ ☛ ➐ ✔ ◗ ✱ ✣ ✔ ☞ ✣ ✖ ✓ ✖ ▲ ✖ ✓ ❚ ✍ ✦ ☛ ✲ → ✦ ☛ ✳ ➐ ✔ ◗ ✦ ☛ ☛ ❖ ✔ ◗Limit on the diffuse flux
✴✵ ✶ ✷ ✸✹ ✺ ✩ ✻ ★ ✺ ✻ ✥ ✻ ✩ ✮ ✼ ✧ ✯ ✽ ✺ ✮ ✥✾ ✬ ✬ ✧ ✺ ✯ ✩ ✧ ✪ ✼ ✻ ✩ ✿ν
✷ ✧✫ ✧✬ ✭ ✮ ❀ ✧❁ ✧✬ ✯ ✺ ✻ ✸ ★ ✬ ✾ ❁ ✧ ✪ ✧✫ ✧✬ ✭✮ ✧❂ ✩ ✻ ✸ ✯ ✩ ✾ ✬ ❂ ✹ ✫ ✪ ✧✬ ✩ ✧❂ ✩ ❃ ➁ í ❄ ❘ ✤ ✗ P ✒ ✓ ✌ ✤ ✣ ✥ ✙ ✔ ✕ ✖ ✏ ✌ ❅ ✤ ☞ ✣ P ò ➑ ✦ ☛ ð ✜ ✏ ✌ → ✚ ✣ ð Ó ✣ ✕ → Ó ➐ ✔ ◗ ✜ ➐ ➁ ☞ ✔ ❅ ✓ ✕ ✖ ☞ ✤ ❇ ✘ ❅ ➑ ✒ ✓ ✌ ✤ ✣ ✥ ✙ ✔ ✕ ✖ ✏ ☞ ✔ ❅ ✓ ✕ ✖ ☞ ✤ ✣ ✏ ❅ ✓Diffuse Flux
- Generally 103 larger
than point fluxes
- Atm. ν backgrounds
103 worse
- E2Φν < 1.0x10-6
GeV cm-2s-1sr-1
❅ ❆❇ ❈ ❉ ❊ ❋● ❍ ■ ❏ ❑▲ ▼ ◆❖ ❖ P◗ P❘❙ P- Highly rel. Outflow:
– coalescence neutron star bin. – collapse of a supermass. star
- Cosmological dist.
- Timescale: msec - min,
– E γ typ :300 keV
- Shock accel. (int. or ext.)
– e: sync. + IC – p: pγ, pp ν
Gamma Ray Bursts
Visible image in April 97 s erg L
51
10 ≈
in thermal 5 MeV ν
High energy neutrinos from GRB ‘s ?
Off source GRB search bin GRB Position
1 hour 1 hour 16 s
BKG - off time BKG - off time
- n time
GRB burst
No evidence for GRB neutrino emission …
10-10 1000 Gamma-factor
Waxman and Bahcall
10-16 Fluence (TeVcm-2s-1)
➓ ✕ ✔ ❆ ✖ ✏ ✓ ✖ ✤ ☞ ✜ ✘ ▲ ✒ ✕ ✔ ❑ → ❾ ❅ ☞ ✖ ❑ ▼ ✙ ✒ ☞ ✏ ✔ ✥ ✕ ✤ ✢ ✒ ✢ ✖ ✘ ✖ ✓ ❚ ❇ ✤ ✕ ❆ ✖ ❇ ❇✑✔ ✕ ✔ ☞ ✓ ▼ ❅ ✓ ✣ ❊ ↕❚ ✢ ❅ ✕ ✣ ✓ ✣ ■✑✍ ➆ ✒ ❂ ✔ ✣ ✔ ✒ ✕ ✏ ✙ ✔ ✣Supernovae
- Photo-desintegration:
- Electron capture:
- Thermal cooling:
n He Fe 4 134
56
+ →
e
n p e ν + → +
− e Z Z
A A e ν + → +
− − 1
τ τ µ µ
ν ν ν ν ν ν γ , ,
e e
e e → →
− +
erg E MeV E
53
10 3 , 50
∑
⋅ ≈ <
ν ν
Burst detection
✚ ☛ ❾ ✔ ◗ ✔ ❯ ❘ ✤ ➇ ☞ ✤ ✖ ✣ ✔ ❊ ➔☛ ☛ → ✦ ☛ ☛ ☛ ❱ ❑ ■ ✌ ✒ ❂ ✔ ✣ ✜ ❾ ✜ ➁ ❼ ✜ ✒ ✘ ✤ ➇ ✔ ☞ ✔ ✕ ✗ ❚ ☞ ✔ ❅ ✓ ✕ ✖ ☞ ✤ ❆ ✔ ✓ ✔ ✏ ✓ ✤ ✕ ❆ ✔ ✓ ✔ ✏ ✓ ✣ ✖ ✌ ❅ ✘ ✓ ✒ ☞ ✔ ✤ ❅ ✣ ✕ ✒ ✓ ✔ ✖ ☞ ✏ ✕ ✔ ✒ ✣ ✔ ✖ ☞ ✒ ✘ ✘ ➓ ❾ ❖ ✣ ✍ ❲ ➝ ➻ ➡ ❳ ➧ ➨ ➡ ❨ ❩ ❬ ❭ ❪ ❫ ❴ ❩ ❵ ❛ ✓ ✖ ✌ ✔Supernova detection
✜ ✌ ✒ ☞ ❆ ✒ ❙ ✦ ☛ ✍ ↕ ☛ ❿ ✤ ❇ ✗ ✒ ✘ ✒ ➑ ❚ ➇ ✖ ✓✙ ↔ ☛ ❿ ✔ ❇ ❇ ✖ ✏ ✖ ✔ ☞ ✏ ❚ ó ✦ ❇ ✒ ❂ ✔ ❽ ❚ ✔ ✒ ✕ ✜ ❾ ✜ ➁ ❼ ✜❜ ❜ ❊ ✚ ☛ ☛ ✦ ■✑✍ ☞ ✔ ➇ ✕ ✔ ✒ ❆ ✤ ❅ ✓ ❋ ✌ ✤ ✕ ✔ ➓ ❾ ❖❝ ✣ ✤ ✥ ✓ ✖ ✌ ✖ ❑ ✔ ❆ ✒ ✕ ✓ ✖ ❇ ✖ ✏ ✖ ✒ ✘ ❆ ✔ ✒ ❆ ✓ ✖ ✌ ✔ ✓ ✤ ✣ ❅ ✥ ✥ ✕ ✔ ✣ ✣ ☞ ✤ ☞ → ➓ ✤ ✖ ✣ ✣✤ ☞ ✖ ✒ ☞ ☞ ✤ ✖ ✣ ✔ ❍ ❍ ❍ ↔ ☛ ❿ ❊ ↔↕ ❿ ■ ✤ ❇ ✗ ✒ ✘ ✒ ➑ ❚ ➇ ✖ ✓✙ ↔ ☛ ❿ ✔ ❇ ❇ ✖ ✏ ✖ ✔ ☞ ✏ ❚ ó ✦ ❇ ✒ ❂ ✔ ❽ ❚ ✔ ✒ ✕ ☞ ❍ ✢ ❍ ✍ ✗ ✒ ✘ ✒ ✏ ✓ ✖ ✏ ✣ ❅ ✥ ✔ ✕ ☞ ✤ ▲ ✒ ✔ ✔ ▲ ✔ ✕ ❚ ✦ ✛ → ✦ ☛ ☛ ❚ ✔ ✒ ✕ ✣ ✎ ✔ ☞ ✣ ✖ ✓ ✖ ▲ ✖ ✓ ❚ ✍ ✜ ❾ ✜ ➁ ❼ ✜ ✚ ☛ ☛ ✦WIMPs from Sun/Earth
WIMP Analysis by AMANDA Stockholm...
Angular Spread of WIMP signal
- Angular spread
decreases as WIMP mass increases, reducing atm. ν background
Neutralino search in AMANDA
❍ ❍ ✙ ✔ ✒ ▲ ❚ ❋ ✣ ✘ ✤ ➇ ✘ ❚ ✌ ✤ ▲ ✖ ☞✗χ
➙ ✣ ✓ ✕ ✒ ✥ ✥ ✔ ❆ ✖ ☞ ✗ ✕ ✒ ▲ ✖ ✓ ✒ ✓ ✖ ✤ ☞ ✒ ✘ ❇ ✖ ✔ ✘ ❆ ✤ ❇ ✔ ✒ ✕ ✓✙ ❞ ✜ ✣ ✣ ❅ ✌ ✥ ✓ ✖ ✤ ☞ ✤ ☞ ❆ ✒ ✕ ❂ ✌ ✒ ✓ ✓ ✔ ✕ ✍ ❆ ❅ ✔ ✓ ✤ ☞ ✔ ❅ ✓ ✕ ✒ ✘ ✖ ☞ ✤ ✣ ❋ ✔ ☞ ✔ ✕ ✗ ❚ ❆ ✔ ☞ ✣ ✖ ✓ ❚ ☛ ❍ ➔ ➐ ✔ ◗ ❽ ✏ ✌ ✣ ✦ ➏ ❍ ➏ ✔ ▲ ✔ ☞ ✓ ✣ ✣ ✔ ✔ ☞ ✦ ✛ ✔ ➑ ✥ ✔ ✏ ✓ ✔ ❆ ❍ ❍ ❍ ➆ ✕ ✤ ✌ ✏ ✔ ☞ ✓ ✔ ✕ ✤ ❇ ✔ ✒ ✕ ✓✙ ✍ ❚ → ✦ ☛ ❚ ✔ ✒ ✕ ✣ ✦ ➔☛ ❆ ✒❚ ✣ ❡ ❢Monopole and Muon Light Yield
- Due to n2(g/e) ~ 8300
the light production is enhanced compared to muons.
Monopole Analysis by AMANDA Zeuthen...
Monte Carlo: Monopole
- Early photons are red, late
photons are blue. More photons are larger circles
- Bottom of array is toward
center of earth
- Upgoing Monopole
- Sensitive to relativistic
Monopoles
- at β ~ 0.8 comparable
to other experiments
- slight improvement
towards β=1.0
AMANDA Monopole Limits
GUT-scale-sensitivity
- Φ ∼ Λ3
- m = Λ/α
- β = β (E=gBL,m)
- Maximal GUT scale
~ 1020 eV
- sensitive to Weiler-
Monopoles of m < 1011 GeV
Baikal AMANDA ICE3