Sensitivity for point sources with KM3NeT/ARCA and ANTARES neutrino telescopes

In recent years, the adoption of a multi-messenger approach in astrophysics has significantly advanced our understanding of the high-energy Universe, allowing researchers to study cosmic phenomena from multiple observational perspectives. Neutrino telescopes, in particular, have become indispensable tools in this framework, enabling the detection of high-energy neutrinos and shedding light on the hadronic components of astrophysical events such as gamma-ray bursts and active galactic nuclei. By analyzing these neutrinos, scientists are able to test and refine existing models of gamma-ray sources, further expanding our knowledge of the most extreme and energetic processes in the cosmos. In this contribution, we present the combined analyses of the data collected with two neutrino telescopes located in the depths of the Mediterranean Sea: the ANTARES detector, operational for over 15 years off the coast of Toulon (France), and KM3NeT/ARCA, one of the two detectors constituting the next-generation neutrino telescope KM3NeT. ARCA is optimized for astrophysical neutrinos exceeding 1 TeV in energy and is presently collecting data while being under construction near Portopalo di Capo Passero (Italy). The goal is to derive the sensitivity of the detectors for point-like sources as a function of the declination.