Professor Dr. SEBASTIAN BÖSER

PRISMA Professorship for Experimental Astroparticle Physics

In September 2014 Sebastian Böser took up the professorship for experimental astroparticle physics at the Cluster of Excellence PRISMA, Department of Physics, Mathematics and Computer Sciences of Johannes Gutenberg University in Mainz. 

The new research group is targeting the future extensions of the IceCube neutrino observatory at the South Pole. The recently discovered flux of high-energy neutrinos of astrophysical origin can provide important clues to solve the long-standing puzzle of the origin of cosmic rays. At low energies, a precise measurement of the atmospheric flux can give information about the properties of the neutrinos itself – in particular the ordering of the neutrino mass eigenstates – and will thus contribute to our understanding of the physics beyond the standard model.   

Next to the determination of the neutrino mass hierarchy and the development of new methods to lower the energy threshold of the detector one focus of the research will be the development of new light sensors. Using a concept based on wavelength-shifting and light-guiding materials the approach promises not only higher light collection efficiency but also a significantly reduced sensor self-noise.  

Acting as a pathfinder, this new technology can allow further extension of the detector with a threshold in the MeV range, which would not only allow to search for CP-Violation in the neutrino sector, but also can detect neutrinos from supernova in other galaxies than our own, opening the door to a multitude of phenomena in astroparticle and particle physics. 

The described research here contributes to Research Area B: "Origin of Mass und Physics Beyond the Standard Model“.

Sebastian Böser was born in 1977 in Starnberg, Bavaria. He studied physics at the Technical University in Munich where he acquired the diploma dregree. At DESY Zeuthen Sebastian Böser took on his doctoral studies graduating there in 2006; title of his PhD Thesis: "Acoustic detection of high-energy cascades in ice". After a postdoctoral employment at DESY Zeuthen he took on a Marie Curie Fellowship at the University College in London from 2007 to 2010. From 2010 until his appointment at JGU Mainz, Sebastian Böser was employed as research scientist (Akademischer Rat) in the astroparticle physics group at Bonn University, Germany.

 

Scientific career

2014
Appointment Professor for experimental Astroparticle Physics, Cluster of Exzellence PRISMA, Departement for Physics, Mathematics and Computer Sciences, Johannes Gutenberg-University Mainz, Germany

2010-2014
Research Scientist (Akademischer Rat)
University of Bonn, Germany

2008-2010
Long-term attachment
CERN, Geneva, Switzerland

2007-2010
Marie Curie Fellow in ATLAS
University College, London

2006-2007
Postdoctoral employment, DESY, Zeuthen

2003-2006
PhD at DESY, Zeuthen
Titel of dissertation: "Acoustic detection of high-energy cascades in ice"

2007
Tiburtius Recognition Award for outstanding PhD work by the Berlin Universities

Main research and teaching topics

  • Astroparticle physics
  • Precision measurement of neutrino oscillations
  • Neutrino astronomy
  • Experimental search for supernova neutrinos
  • Large-area photosensor development 

Publications

Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
M. Aartsen, et al.
Science 342 (2013) 1242856. arXiv:1311.5238, doi:10.1126/science.1242856.

Observation of High-Energy Astrophysical Neutrinos in Three Years of Ice-Cube Data
M. Aartsen, et al.
Phys.Rev.Lett. 113 (2014) 101101. arXiv:1405.5303, doi:10.1103/PhysRevLett.113.101101.

Letter of Intent: The Precision IceCube Next Generation Upgrade (PINGU)
M. Aartsen, et al.
arXiv:1401.2046.

Detecting extra-galactic supernovaneutrinos in the antarctic ice
S. Böser, M. Kowalski, L. Schulte, N. L. Strotjohann, M. Voge
Astroparticle Physics 62 (0) (2015) 54 – 65. doi:http://dx.doi.org/10.1016/j.astropartphys.2014.07.010.URL http://www.sciencedirect.com/science/article/pii/S0927650514001133

Search for t \bar{t} H(H -> b \bar{b})
G. Aad, L. Asquith, S. Böser, et al.
ATL-PHYS-PUB-2009-057, ATLCOM-PHYS-2009-216 (2009)

Design and performance ofthe South Pole Acoustic Test Setup
Y. Abdou, K.-H. Becker, J. Berdermann, M. Bissok, C. Bohm, et al.
Nucl.Instrum.Meth. A683 (2012) 78–90. arXiv:1105.4339

Design and initialperformance of the askaryan radio array prototype eev neutrino detector at the south pole
P. Allison, J. Auffenberg, R. Bard, J. J. Beatty, D. Z. Besson, S. Böser, et al.
Astroparticle Physics 35 (7) (2012) 457–477

An absence of neutrinos associated with cosmic-ray acceleration in gamma-raybursts
R. Abbasi, et al.
Nature 484 (7394) (2012) 351–354

Measurement of sound speed vs. depth in south pole ice for neutrino astronomy
R. Abbasi, et al.
Astroparticle Physics 33 (5-6) (2010) 277–286

Measurement of acoustic attenuation in south pole ice
R. Abbasi, et al.
Astroparticle Physics34 (6) (2011) 382–393

A radio air-shower test array (rasta) for icecube
S. Böser for the IceCube collaboration
Nuc.Inst. Meth. A 662 (2012) S66–S68

Acoustic and Radio EeV Neutrino Detection Activites – Proceedingsof the International Workshop (ARENA 2005)
R. Nahnhauer, S. Böser (Eds.),
DESY Zeuthen, Germany, May 17-19, 2005,World Scientific Publishing Co. Pte. Ltd, 2006, also published in Int. J. Mod. Phys. A, Vol. 21,Supp. 01