Workshop on core-collapse supernova neutrino detection

4 juil. 2018, 09:00 → 5 juil. 2018, 19:00 Europe/Paris

Salle du Conseil (Institut de Physique Nucléaire d'Orsay)

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map_IPN_entrances.pdf

mercredi 4 juillet

09:30 → 10:00 Welcome coffee

10:00 → 10:20 Introduction

Orateur: Alexis Coleiro (APC / Université Paris Diderot)

intro_CCSN.pdf

10:20 → 11:00 SuperNova Early Warning System (SNEWS)

The Supernova Early Warning System (SNEWS) is a cooperative effort between the world's neutrino detection experiments to spread the news that a star in our galaxy has just experienced a core-collapse event and is about to become a Type II Supernova. This project exploits the ~hours time difference between neutrinos promptly escaping the nascent supernova and photons which originate when the shock wave breaks through the stellar photosphere, to give the world a chance to get ready to observe such an exciting event at the earliest possible time. A coincidence trigger between experiments is used to eliminate potential local false alarms, allowing a rapid, automated alert.

Orateur: Alec Habig (University of Minnesota Duluth)

snews-orsay.pdf

11:00 → 11:40 CCSN neutrino detection with Super-Kamiokande and Hyper-Kamiokande

Orateur: Yusuke Koshio

grbsn_koshio.pdf

11:40 → 12:20 CCSN neutrino detection with IceCube

Orateur: Segev BenZvi

IceCube SN Overview.pdf

14:00 → 14:40 CCSN neutrino detection with Borexino

Orateur: Zara Bagdasarian

Zara_Supernova_Borexino.pdf

14:40 → 15:20 Towards detecting extra-galactic supernovae in the antarctic ice

While the detection of a neutrino burst from a galactic supernova would provide a plethora of information on the stellar collapse as well as the neutrino properties, the low rate of 1-2 CCSNe per century make this a tedious endeavor. Instead, a detector with an effective mass of 10 Mton at 10MeV would detect extra-galactic supernovae at a rate of 1-2 per year - albeit with a much lower number of neutrino interactions per burst. I will present a conceptual design for the Megaton Ice Cherenkov Array (MICA) — a dedicated setup in the antarctic to ice optimized to detect extra-galactic neutrino bursts. Alongside with first results highlighting the physics potential I will show first steps towards realization of the required sensor technology.

Orateur: Sebastian Böser (Universität Bonn)

ExtraGal-CCSNe-Boeser.pdf

15:20 → 16:00 CCSN neutrino detection with DUNE

The Deep Underground Neutrino Experiment (DUNE), a 40-kt liquid argon time projection chamber detector located deep underground at the 4850L of the Sanford Underground Research Facility (SURF) in South Dakota, will record the burst of neutrinos from the core collapse of a massive star in the Milky Way neighborhood.DUNE's liquid argon has unique sensitivity to the electron neutrino component of the burst. This talk will present the expected capabilities of DUNE for measurements of neutrinos in the few-tens-of-MeV range relevant for supernova detection, and the corresponding sensitivities to neutrino physics and supernova astrophysics. Recent progress and some outstanding issues will be highlighted.

Orateur: Inés Gil-Botella

SN_DUNE_Orsay_ines.pdf

16:00 → 16:30 Coffee break

16:30 → 17:00 Prospects for CCSN neutrino detection with KM3NeT

Orateur: Marta Colomer-Molla

CCSN_workshop.pdf

jeudi 5 juillet

09:30 → 10:00 Welcome coffee

10:00 → 10:30 Prospects for CCSN alert triggering with KM3NeT

Orateur: Massimiliano Lincetto (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)

Lincetto___CCSNWS___20180705.pdf

10:30 → 11:10 Triangulation method for locating a core-collapse supernova

Modern neutrino facilities will be able to detect a large number of neutrinos from the next Galactic supernova.
In this talk we will present the update of the triangulation method for locating a core-collapse supernova by employing the neutrino arrival time differences at various detectors. We will discuss detailed numerical fits which are necessary in order to determine the uncertainties of these time differences for the cases when the core collapses into a neutron star or a black hole. A global picture with the inclusion of all relevant present and near future neutrino detectors is presented.

Orateur: Vedran Brdar

VedranSN.pdf

11:10 → 11:50 Neutrinos from supernovae and in binary neutron star mergers

We discuss the recent progress in our understanding of flavor evolution in dense astrophysical environments, in particular core-collapse supernovae and binary neutron star mergers. We highlight what we might learn from a galactic supernova, the connection to r-process nucleosynthesis and to the recent kilonova observation.

Orateur: Cristina VOLPE (APC)

Gamma-SNworkshop-Volpe.pdf

14:00 → 14:40 Physics of supernova neutrino oscillations

In this talk the status of both known and unknown neutrino oscillation parameters will be reviewed, with particular focus on the mass ordering and the its discrimination with present experiments and future projects. In this context our current understanding of supernova neutrino flavor conversions is discussed, from ordinary flavor oscillations during the shock-wave propagation to collective flavor transitions induced by self-interactions.

Orateur: Antonio Marrone (Dipartimento di Fisica, Univ. di Bari & INFN Bari)

CCNS_Paris_Marrone.pdf

14:40 → 15:20 Collective Neutrino Oscillations in Dense Neutrino Media

Neutrino evolution in dense neutrino media is a very nonlinear and rich phenomenon. Such a dense neutrino medium could be found in very extreme astrophysical sites such as core collapse supernovae and neutron star mergers. Studying collective neutrino oscillations in the aforementioned settings is very important since neutrinos could play a key role in their dynamics and nucleosynthesis. In this talk, I will discuss our current understanding of this topic which has tremendously changed in the past few years.

Orateur: Sajad Abbar

15:20 → 16:00 Discussions

16:00 → 16:30 Coffee break

16:30 → 17:30 Discussions