Experimental Astroparticle Physics @ Bonn

Supernova 1994D

Marek KowalskiPhysikalisches InstitutUniversität BonnBonn, 27.5.2011

Main activity

• Cosmology with Type Ia Supernovae• Neutrino astrophysics with IceCube

and beyond

SNe Ia Hubble Diagram fainter

Supernova Factory Collaboration:Lawrence Berkeley National LabLaboratorie de Physique Nucleaire et de Haute Energies de ParisInstitut de Physique Nucleaire de LyonCentre de Recherche Astronomy de LyonYale UniversityBonn University

SNfactory: producing unique nearby SNe data

1. Discover

SNfactory: producing unique nearby SNe data

1. Discover

2. Observe

SNIFS: Custom spectrograph for nearby SN observations

SNfactory: producing unique nearby SNe data

1. Discover

2. Observe

3. Analyses

SNIFS: Custom spectrograph for nearby SN observations

SuperNova Integral Field Spectrograph(SNIFS)

Acquisition, Guiding

Microlens array totwo channel spectrograph

15x15 = 225 spectra

Extinctionmonitoring,calibration

Photometric Channel

6” x 6” FOV; 0.4”/spaxel

9.4’ x 9.4’ FOV; 0.14”/pix

Pick-off Prismat SN loc

Galaxy + Sky

SN + Galaxy + Sky

Sky

Example for 3D spectroscopy

Required flux calibration for future

Supernova cosmology <1%.

obs. source inst. atmo.

€

φ(λ ) = S(λ )T(λ )H(λ )

External calibrating of spectral slope (i.e.color) of camerausing a tunable laser & flux-calibrated photo diodes.

SNIFS

Parabolic mirror

tunable

Light source

Calibrated Photo-Diode

Primary Mirror

Task: Build a 2.5 m parabolic mirror, light source & photo-diode system and move it to Hawaii

Constraints on Cosmology

Combination of SNe with: Baryon Acustic Oscillation dataCosmic Microwave Background data

Future topics: Constraining sterile neutrinos with combination of cosmological and IceCube data

M

Supernova Cosmology Project Amanullah et al. 2010

IceCube – a kilometer sized neutrino detector

Since May 2011: IceCube is completed

and taking data!

Since May 2011: IceCube is completed

and taking data!

IceCube

IceCube Neutrino-Trigger

day 0

day 1-10

network of opticaltelescopes

optical SN/GRBdetection

Optical NeutrinoFollow-up

Trigger1000 Hz

Level 130 Hz

Neutrino-Level

0.002 Hz

Neutrino- Multipletts

25 / yr

IceCube-Datenverarbeitung

Farm zur Rekonstruktion von IceCube-Ereignissen

ROTSE III• 4 Teleskope (USA, Turkei,

Australien, Nambia) • Spiegeldurchmesser 0.45 m• Median Reaktionszeit: 7 s• FoV: 1.85 x 1.85 • 25 IceCube-Trigger/Jahr

Neutrino-Nachbeobachtung mit ROTSE III

ROTSE III• 4 Teleskope (USA, Turkei,

Australien, Nambia) • Spiegeldurchmesser 0.45 m• Median Reaktionszeit: 7 s• FoV: 1.85 x 1.85 • 25 IceCube-Trigger/Jahr

1.85o

IceCube 80% Error Circle

Andromedar

26

Neutrino-Nachbeobachtung mit ROTSE III

GRBs

SNe ?

Are there GRB-like jets inside of core-collapse

supernova?

Optical follow-up of neutrino bursts

Constraining SN Jets

First year data: 13.12.2008 – 31.12.2009

Task: Extension towards X-ray search with SWIFT to detect neutrinos from Gamma-Ray Bursts

What else?

Building a Megaton large neutrino detector for extraglactic Supernova

detection!

SN 1987A @ 50 kpc distanceSanduleak -69 202

Detecting nearby supernovae

Kistler et al.

Generic neutrino prediciton (scaling from SN1987A)

10 Mton ≥ 2 SNe/yr!⇒

2 SNe per yr observed (optically) within 10 Mpc distance

Nν≥3

Nν≥10

Where do you find us?

IceCube-VillaWegelerstr. 10, 1OG

&

http://www.astroteilchen.uni-bonn.de/