🎉Congratulations Ricardo Andrés Jaimes Campos (IFIC, CSIC–UV) for winning a poster prize at the TAE Workshop in Benasque (Spain)! His poster on neutrino point source searches with ANTARES & KM3NeT reviews analysis methods for multimessenger neutrino astronomy 🌌🔭 #KM3NeT #ANTARES #Neutrino #TAE2025

Dive into the mysteries of the Universe with #KM3NeT ! Join us at the European Researchers’ Night on September 26th and explore how we detect elusive neutrinos deep in the Mediterranean. 🔎 Check the locally organised events in your city and don’t miss the chance to find our desks and discover more!

Constraining GRB parameters with our record-breaking neutrino KM3-230213A How cool is that? www.km3net.org/constraining... #km3net #neutrinos #grb

Congratulations Luc! Luc Cerisy ( @univ-amu.fr / CNRS Marseille ) won the 2024 GNN Dissertation Prize for his thesis: “First tau neutrino appearance, non-unitary mixing and absolute orientation measurements in KM3NeT”. It was one of ten submitted theses. theses.hal.science/tel-04989662v1

STRONGER TOGETHER Paschal Coyle (CPPM Marseille) and Claudio Kopper (ECAP Erlangen) will be the new chairs of The Global Neutrino Network which aims for a closer collaboration and strategy among neutrino telescopes KM3NeT ANTARES IceCube Baikal P-One RNO-G Thanks to the former chair Greg Sullivan

Someone's got famous! 😄 www.youtube.com/shorts/l-gCW...

Yes! we have installed a second 'node' for detection units in the #ORCA seafloor network! A complex operation executed by ship crews, ROV operators and #KM3NeT teams on board and in the control station on the shore. Congratulations and many thanks to all of them! www.km3net.org/second-node-...

Sara, Sriya, Adrian, Jorge, Ricardo and Guille participated in this year's IFIC Summer School, where they taught students Sergi, María, Belén and Pablo how to perform various analyses in @km3net.bsky.social

🚀 At ICRC in Geneva, KM3NeT shared exciting new results in neutrino, astro & dark matter physics, including #KM3230213A, the most energetic neutrino ever detected! 🌌 We also joined CERN’s STELLAR event for public outreach. More: lnkd.in/eB3M88gF #KM3NeT #ICRC2025 #Astrophysics

VEGA has been these two weeks contributing to the large amount of interesting state of the art contributions of the ICRC 2025 with ours from ANTARES & @km3net.bsky.social with more than 5 talks and 7 posters! Looking forward for ICRC 2027 at Buenos Aires and ICRC 2029 at Jinan!

Beautiful pictures in the corridors of @nikhef.bsky.social

Over the past two weeks, a record number of 18 new detection units for the @km3net.bsky.social neutrino detector have been installed on the seabed off the coast of Sicily and connected to the data networks on land. www.nikhef.nl/en/news/reco...

🚢🌊 Welcome, ARCA51! A milestone for KM3NeT! 🚢🌊 In the past 2 weeks, KM3NeT/ARCA grew to 51 detection units and got a new acoustic system with sub-meter precision 🎯 👏 Huge thanks to our offshore & onshore teams! More details here: lnkd.in/euUAg-f4 #KM3NeT #ARCA51 #Neutrino

Kicking off your week with some great news? More updates will follow soon! #staytuned

We are very proud of our PhD student Nadja Lessing from @vegaific.bsky.social! She won the @europhysicssociety.bsky.social poster prize at the Majorana School held in Modica (Sicily, Italy)! 👏👏👏 On her poster she shows how KM3neT can search for quantum decoherence Have a look and get inspired!

🌌 KM3NeT at #EPSHEP2025 🌌 At the #EPS #HEP #conference (the High-Energy Physics division of @europhysicssociety.bsky.social), KM3NeT participated with 5 parallel talks as well as a plenary talk It was well appreciated, and nice to share knowledge across communities #astrophysics 🩵 #particlepysics

We love the sunset above the Mediterranean Sea Seen from our ARCA control station in Portopalo di Capo Passero in Sicily, Italy 😍 #KM3NeT

In a new #KM3NeT paper we show that the flux of atmospheric muon-neutrinos in the ORCA6 detector is in agreement with the HKKM14 model and with the values measured by other experiments. It is a promise for more precise measurements with more detection units in ORCA. www.km3net.org/atmospheric-...

Last week in Brussels our funding authorities signed an agreement establishing the #KM3NeT AISBL Serious stuff! The #AISBL provides us with a formal and internationally recognised legal entity as a non-profit organisation building, operating and exploiting the KM3NeT observatory Important!

Last week, our Collaboration met in Caen for our summer meeting, with great talks on ARCA & ORCA detector progress,calibration,simulation and analysis. Welcome to new members: Princeton (full),TU Munich,NTNU & UNESP (observers)! Thanks @lpccaen.bsky.social for hosting us. See you in October at CERN!

🌈 During #PrideMonth, we honour the 1969 Stonewall riots and the fight for #LGBTQIA+ rights. We celebrate diversity, inclusion, and the courage of those who stood for equality. As a research collaboration, we believe science must be open to all, regardless of identity or orientation. 💡🌊

Happy anniversary #nikhef50! Today we congratulate @nikhef.bsky.social with its 50th anniversary. Nikhef is a founding partner of #KM3NeT. It is the lab where our multi-PMT optical module was born. Thanks for all your valuable contributions to #KM3NeT. We wish you a splendid anniversary week!

Four months ago we published the exciting #KM3NeT_UHE #RecordNeutrino #KM3230213A in @nature.com The scientific community is eagerly working on understanding this observation. Beside our 5 companion papers, almost 30 papers have been published in a broad range of topics: arxiv.org/search/?quer...

A new #KM3NeT paper! About how, in real time, we filter our raw data. The design of the filter, its purity or how well background is removed, the computing capacity needed, its efficiency in terms of effective detector volume. It is all explained in www.km3net.org/the-online-d... Enjoy reading!

How are KM3NeT’s #OpticalModules built? It’s an elaborate, multi-step process! Last week, our collaborators met at the new #CAPACITY lab in #Caserta for the 2nd Optical Module Integration Workshop to assemble, test, and share best practices. #KM3NeT More info: www.km3net.org/2nd-dom-inte...

WELCOME ORCA28! 🎉 A sea operation was performed this week, with a twofold purpose: the recovery from the sea bottom of some oceanographic instruments which require maintenance and the installation of 4 new detection units!

In KM3NeT, we use light to "see the invisible". This display shows #KM3230213A, our ultra-high-energy neutrino. Each sphere shows #Cherenkov #light detected deep under the sea, with colours representing when the light arrived. #InternationalDayOfLight #KM3NeT

Europe day was a week ago, but for us it's Europe day everyday! We're happy that our #RecordNeutrino has been featured by the @erc.europa.eu in #CORDIS_eu: cordis.europa.eu/article/id/4... #EUresearchResults #INFRADEV2 #MuSES #MessMapp #UNOS #ChETEC-#INFRA Thanks, and on to the next big result! ✨

BIG PARTY today: the new facilities of the CAPACITY laboratory in Caserta are inaugurated! This is a very big step towards a considerable speed up of the construction of the KM3NeT detectors. It is one of our main integration sites! www.km3net.org/inauguration... #NextGenerationEU #km3net4rr

From its design study to the establishment of a legal entity KM3NeT received support and recognition from the European Union and the European institutions. A prime example of democracy in action for science. Thank you #Europe! We wish you a happy #EuropeDay! www.km3net.org/km3net-eu-pr...

Today, on World Creativity and Innovation Day, we celebrate our engineers and technicians for their creative and innovative solution for the deployment of our detection units with optical modules in the deep sea. www.km3net.org/research/det... #WCID #WCID2025 #KM3NeT #neutrino

This week the third #KM3NeT Town Hall Meeting took place in the School of Physics of Les Houches🇫🇷. Experimentalists and theorists from the field of #neutrino #astronomy exchanged ideas and built new collaborations. Thank you to all for making this event a success! www.km3net.org/km3net-has-m...

Today, we celebrate #WorldQuantumDay Every day, we study the #quantum mechanical phenomenon of #neutrino oscillations with the #ORCA detector of #KM3NeT One day, we searched for quantum #decoherence in neutrino oscillations We wish you Happy World Quantum Day! iopscience.iop.org/article/10.1...

A new paper describing the characteristics of the new #photomultiplier for the detectors of #KM3NeT www.km3net.org/a-new-pmt-fo... #neutrino #PMT

On International Women's Day we put the spotlights on our #KM3NeT colleagues Dr Jutta Schnabel, Dr Lizeth Morales-Gallegos, Prof. Dr Annarita Margiotta and Prof. Dr Katerina Tzamariudaki. 🧵 1/4

Did you hear about the #KM3NeT_UHE #RecordNeutrino observation published in @nature.com on the 12th of Feb? We collected ~300 main media articles from all over the world. An overview from Nature is given here nature.altmetric.com/details/1741... Below, we list some of the nicest stories

Thank you @particleclara.bsky.social for this very nice explanatory video about our #KM3NeT_UHE #RecordNeutrino observation!

KM3NeT xkcd.com/3053

A new companion paper is out (No.5)!📜🔔 It tests Lorentz symmetry via high-energy neutrino analysis using our #KM3230213A, setting the tightest limit on neutrino speed vs. light speed (less than 1 part in 10^21) More details arxiv.org/abs/2502.12070 #RecordNeutrino #KM3NeT_UHE

Many colleagues and enthusiasts tuned in the 12th to hear about the extraordinary #KM3NeT_UHE neutrino observation💙🤍 Thanks to all of you contributing to the local events Paper➡️https://www.nature.com/articles/s41586-024-08543-1 #RecordNeutrino #KM3230213A

Discover how we at @nikhef.bsky.social assemble a @km3net.bsky.social Digital Optical Modules (DOM) with 31 Photomultiplier tubes (PMTs). 18 DOMs connected with fiber optic and cables forms one Detector Unit (DU). For a KM3NeT detector 2070 DOMs are needed (115 DUs). youtube.com/watch?v=jByv...

Want to get your hands on our #KM3NeT_UHE #RecordNeutrino event? Our public data, event display, and notebooks to reproduce some of our findings for #KM3230213A are on zenodo: zenodo.org/records/1486... Or launch notebooks on mybinder from our git: github.com/KM3NeT/KM3-2... Enjoy!

Thanks to everyone who followed the #KM3NeT_UHE #RecordNeutrino result announcement on the 12th of February 2025! It was a big success with thousands of views from all over the world: locally & online Webinar recording➡️ www.youtube.com/live/2jgyZlB... More info➡️ www.km3net.org/observation-...

A new paper is out!📜🔔 The sample shown in the plot of 17 potential blazar associations in the 99% CL region of KM3-230213A is presented. Among them, the three most interesting candidates are highlighted in the paper. Go have a look more in detail here: arxiv.org/abs/2502.08484

A new paper is out!📜🔔 The paper investigates the possible cosmogenic origin of #KM3230213A evaluating different evolutions of cosmic ray sources. The plot shows the expected neutrino fluxes for various evolutions of the sources. More in detail here: arxiv.org/abs/2502.08508

A new paper is out! 📜 🔔 The paper investigates the possible galactic origin of #KM3230213A, concluding that it is very unlikely due to the lack of sources and the required energies. Go have a look more in detail here: arxiv.org/abs/2502.08387

A new paper is out!📜🔔 The paper compares #KM3230213A within the global neutrino landscape to IceCube and Auger data. It explores flux models, and this plot displays the constraints on single power-law flux. Go have a look more in detail here: arxiv.org/abs/2502.08173

📢 Groundbreaking discovery! EU-Funded @km3net.bsky.social detected the highest-energy #neutrino ever seen in the Mediterranean Sea. Read more about this fascinating breakthrough from the universe to the ocean floor ⤵️ #ResearchImpactEU www.km3net.org/km3net-detec...

The #KM3NeT_UHE #RecordNeutrino results were published in @Nature today! In case you've missed our exciting news: Paper➡️ www.nature.com/articles/s41... News item➡️ www.km3net.org/observation-... Press release➡️ www.km3net.org/km3net-detec... Popular version➡️ www.km3net.org/the-observat...

Clash of the Titans: ultra-high energy KM3NeT event versus IceCube data https://arxiv.org/pdf/2502.04508 Shirley Weishi Li, Pedro Machado, Daniel Naredo-Tuero, Thomas Schwemberger