Letter by Martínez-Martínez et al Regarding Article, “Variable Presentations of Postpartum Angiopathy”

Multi-messenger real-time follow-up of transient events with ANTARES neutrino telescope

“…Furthermore, the capability of the ANTARES data acquisition system to store a few minutes of raw data coincident with a GCN alert extends the possibility of increasing offline sensitivity to transient astrophysical events. In the near future, KM3NeT, currently under deployment in the Mediterranean sea, will further develop these dedicated multi-messenger programs that will benefit from an increase of both the discovery potential (by a factor of ∼50 with respect to ANTARES) and the angular resolution of muon tracks and cascade events [32].…”

“…In particular, a fast and robust online algorithm reconstructs tracks in nearly real time [5]. The remaining sample of events is then sent to a more accurate reconstruction algorithm [6] which improves the angular resolution of each event in less than 5 s. Both algorithms use an idealised geometry of the detector that does not take into account the dynamical positioning of the optical modules due to sea current variations. For high-energy tracks, this use limites the angular resolution by about…”

Constraints on the neutrino emission from the Galactic Ridge with the ANTARES telescope

“…The study presented here focuses on track-like events, associated with CC interactions of muon neutrinos. The muon direction is correlated with that of the incoming neutrino, and a sub-degree angular resolution on the neutrino arrival direction can be achieved by means of a maximum likelihood fit [10].…”

“…The directional resolution in the High Energy Starting Events (HESE) sample for shower events is limited, and individual sources of the signal have not been identified so far. For the ANTARES location, in the Mediterranean Sea, the Southern sky is accessible via upward-going muon tracks, for which a sub-degree angular resolution is achieved [10]. Consequently, an ensemble of individual point sources, or an extended region with an enhanced emission, might appear diffuse to IceCube but resolvable by ANTARES.…”

Limits on point-like sources with different spectral indexes around the Galactic center using the ANTARES neutrino telescope

“…This minimisation was performed by considering different cuts on three parameters of the events: the quality of the track fit, Λ; the angular error estimate, β ; and the zenith angle, θ . The values of these parameters are obtained by the track reconstruction of the neutrino events, which uses a maximum likelihood (ML) method [7]. The reconstruction is based on a multi-step algorithm to fit the direction of the reconstructed muon by means of a maximisation in the likelihood of the reconstruction.…”