Prof. Dr. Marek Kowalski

Profil

Zusammenfassung

Prof. Kowalski entwickelt und nutzt Neutrinoteleskope zur Beobachtung hochenergetischer Ereignisse im Universum. Seine Expertise umfasst die Detektion von Neutrinos aus astrophysikalischen Quellen sowie die Nutzung von Supernovae zur Vermessung kosmologischer Parameter. Diese Kompetenzen ermöglichen es, fundamentale Fragen zur Struktur und Entwicklung des Universums zu beantworten und neue Fenster zur Beobachtung des Kosmos zu öffnen.

Skills

Name

Prof. Dr. Marek Kowalski

Titel

Prof. Dr.

Fakultät

Mathematisch-Naturwissenschaftliche Fakultät

Institut

Institut für Physik

Arbeitsgruppe

Experimentelle Physik, Experimentelle Astroteilchenphysik - DESY (S)

E-Mail

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Telefon

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HU-FIS-Profil

Quelle ↗

Zuletzt gescrapt

27.6.2026, 01:09:27

• Astrophysics Center for Multimessenger Studies in Europe (ACME)

  Quelle ↗

  Förderer: Horizon Europe: Research and Innovation Action (RIA) Zeitraum: 09/2024 - 08/2028 Projektleitung: Dr. Jakob Nordin, Prof. Dr. Marek Kowalski

• Astroteilchenphysik mit dem IceCube Neutrinoteleskop

  Quelle ↗

  Förderer: Bundesministerium für Forschung, Technologie und Raumfahrt Zeitraum: 07/2026 - 06/2029 Projektleitung: Prof. Dr. Marek Kowalski

• Astroteilchenphysik mit dem IceCube Neutrinoteleskop

  Quelle ↗

  Förderer: Bundesministerium für Forschung, Technologie und Raumfahrt Zeitraum: 07/2023 - 06/2026 Projektleitung: Prof. Dr. Marek Kowalski

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• THE<i>HUBBLE SPACE TELESCOPE</i>CLUSTER SUPERNOVA SURVEY. V. IMPROVING THE DARK-ENERGY CONSTRAINTS ABOVE<i>z</i>&gt; 1 AND BUILDING AN EARLY-TYPE-HOSTED SUPERNOVA SAMPLE

  2012

  The Astrophysical Journal · 1703 Zitationen · DOI

  Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digitales de tema americanista a los investigadores y usuarios interesados de cualquier parte del mundo.

• Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets

  2008

  The Astrophysical Journal · 1558 Zitationen · DOI

  We present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compilations. This “Union ” compilation of 414 SN Ia, which reduces to 307 SNe after selection cuts, includes the recent large samples of SNe Ia from the Supernova Legacy Survey and ESSENCE Survey, the older datasets, as well as the recently extended dataset of distant supernovae observed with HST. A single, consistent and blind analysis procedure is used for all the various SN Ia subsamples, and a new procedure is implemented that consistently weights the heterogeneous data sets and rejects outliers. We present the latest results from this Union compilation and discuss the cosmological constraints from this new compilation and its combination with other cosmological measurements (CMB and BAO). The constraint we obtain from supernovae on the dark energy density is ΩΛ = 0.713 +0.027

• Optical properties of deep glacial ice at the South Pole

  2006

  Journal of Geophysical Research Atmospheres · 538 Zitationen · DOI

  We have remotely mapped optical scattering and absorption in glacial ice at the South Pole for wavelengths between 313 and 560 nm and depths between 1100 and 2350 m. We used pulsed and continuous light sources embedded with the AMANDA neutrino telescope, an array of more than six hundred photomultiplier tubes buried deep in the ice. At depths greater than 1300 m, both the scattering coefficient and absorptivity follow vertical variations in concentration of dust impurities, which are seen in ice cores from other Antarctic sites and which track climatological changes. The scattering coefficient varies by a factor of seven, and absorptivity (for wavelengths less than ∼450 nm) varies by a factor of three in the depth range between 1300 and 2300 m, where four dust peaks due to stadials in the late Pleistocene have been identified. In our absorption data, we also identify a broad peak due to the Last Glacial Maximum around 1300 m. In the scattering data, this peak is partially masked by scattering on residual air bubbles, whose contribution dominates the scattering coefficient in shallower ice but vanishes at ∼1350 m where all bubbles have converted to nonscattering air hydrates. The wavelength dependence of scattering by dust is described by a power law with exponent −0.90 ± 0.03, independent of depth. The wavelength dependence of absorptivity in the studied wavelength range is described by the sum of two components: a power law due to absorption by dust, with exponent −1.08 ± 0.01 and a normalization proportional to dust concentration that varies with depth; and a rising exponential due to intrinsic ice absorption which dominates at wavelengths greater than ∼500 nm.

• Bergische Universität Wuppertal

  Astroteilchenphysik mit dem IceCube Neutrinoteleskop

  university

• Deutsches Elektronen-Synchrotron

  Astroteilchenphysik mit dem IceCube Neutrinoteleskop

  other

• Friedrich-Alexander-Universität Erlangen-Nürnberg

  Astroteilchenphysik mit dem IceCube Neutrinoteleskop

  university