Experimental Astroparticle Physics @ Bonn Supernova 1994D Marek Kowalski Physikalisches Institut...
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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/