-Networking Activities:
The visiting program in NA1 has been highly demanded by the community, with overbooking factor >3. Twenty six worshops and schools have been organized in NA1 and NA2. Noteworthy are those on the Athena-multimessenger synergies (Fig.2) on high-resolution X-ray spectroscopy, timely organized with the XRISM launch, and various workshops on multimessenger and GW data analysis. The activities dedicated to Einstein Telescope have contributed to its adoption as ESFRI infrastructure. A dedicated workshop has supported the joint efforts of the astronomy and astroparticle communities in the successful proposal in Horizon Europe (ACME) for multimessenger astronomy. The outreach programme has delivered excellent products: updated web pages, educational material, open days, new videos. Noteworthy is the outstanding success of the two full dome videos (Fig.3) with the latest one having reached in this RP3 >8 million viewers. The visibility through dedicated social media channels (e.g. facebook, twitter, youtube) has also notably increased thoughout the life of the project. Several events for the general public have been organised (Fig.4) including moving initiatives in prisons and mental clinics.
-Transnational Access:
AHEAD2020 has issued 7 Announcement of Opportunity covering both the Visitor Program and TA facilities, supporting projects of 216 researchers for a total of 1765 days. The TA programs have basically met the expected accesses. About 70 researchers or enigneers, including teams from SME, have visited facilities used to test and/or calibrate space hardware (TA1) for a total of 177 days, while 74 researchers have exploited the facilities devoted to data analysis (TA2) and computational astrophysics (TA3) for a total of 710 days.
-Virtual access:
Activities for rescoping virtual access (VA1) activities have been successfully accomplished, with the development of a user-friendly interfacing tool to GWOSC website, that allows an easy data download and quick look analysis for non-expert users, facilitating multimessenger research.
-Joint research Activities:
Two out of the seven JRA, JRA1& 2 are focused on detector and mirror technology developments for X-ray, mostly linked to Athena and other space missions launched recently. The activities have been successful enabling improvements on the instrument background studies aimed at Athena, that are exploited for existing missions, such as Newton-XMM, and the testing/calibration of X-ray optics for newly launched Einstein Probe and SVOM (Fig.5). Enhancing developments of the next generation of HE space experiments for Multimessenger Astronomy (Fig.6) is the scope of JRA3, that has focussed on the novel Lobster-eye technology for wide sky monitoring, including the support to Theseus, one of the candidates for the ESA M7 mission, and the new venue offered by nanosat constellations, including the set up of a dedicated ground base and the successful proposal of a small satellite constellation to ESA.
The full exploitation of the upcoming observing MMA facilities was addressed with advanced tools for data and alerts analysis, models and atomic database, that was the scope of JRA 4, 5 &6 (Fig. 7). Some of these tools have been also properly timed to exploit novel data from high-res X-ray spectroscopy missions as XRISM (Fig.8). Innovative technologies developed under the aforementioned JRAs are being applied for the benefit of the society JRA7, including the development of high res X-ray spectrometer for material science (Fig.9) and robotic sensors for environmental monitoring.
In summary, the results have met with the strategic goals of AHEAD2020, leading to 283 publications on refereed journals, including 10 on Nature.
