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Jonathan Biteau

Jonathan Biteau

Maître de conférence en physique des astroparticules, Université Paris-Saclay
Jonathan Biteau est maître de conférence et mène ses recherches au Laboratoire Irène Joliot-Curie de physique des deux infinis (IJCLab, Univ. Paris-Saclay, CNRS/IN2P3). Il enseigne la physique numérique, les astroparticules, l'astrophysique, la physique des particules et la physique nucléaire. Depuis 2015, il étudie dans la collaboration Pierre Auger les directions d'arrivée des rayons cosmiques d'ultra-haute énergie, qui ont permis en 2017 de valider leur origine extragalactique. Il a également été membre des collaborations d'astronomie gamma H.E.S.S. et VERITAS, et est un membre actif du consortium CTA depuis 2010. Il s'est spécialisé dans la variabilité des AGN à jet ainsi que dans les interactions entre les rayons gamma et le fond diffus extragalactique. Enfin, Jonathan Biteau contribue activement au développement d'instruments pour la physique des astroparticules, particulièrement pour les caméras qui équiperont les télescopes de taille moyenne du réseau de télescopes CTA-Nord.

Space Science Series

Why is the sky dark at night? The 200-year history of a question that transformed our understanding of the Universe

Jun 19, 2023 06:20 am UTC| Science

As dawn rose over the German city of Bremen on May 7 1823, Heinrich Olbers put the finishing touches to an article that left his name in history. After the deaths of his wife and daughter, Dr Olbers had recently given up...

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Economy

Interest rates: the ugly dilemma facing Europe’s central banks – and why it’s a mistake to cut too soon

Central banks in Europe are discovering an old dilemma: when they lower interest rates because inflation is slowing down, its likely to weaken their currencies. This in turn may delay the fall in inflation towards their...

Europe is still in short-term crisis mode over Ukraine and lacks a vision for its post-war identity

Some believe that the war in Ukraine has fundamentally changed Europe, giving birth to a different kind of European order. That is, it appears to be driving structural shifts in the way Europe is run and organised that...

Mortgage prisoners: regulatory changes and low credit scores have left thousands trapped in a cycle of high payments

There are 8.5 million households in the UK who own a home with a residential mortgage, often with fixed interest rates from two to five years. Usually, when that mortgage deal ends, the borrower will move to another deal...

What should you do if you can’t pay your rent or mortgage?

The cost of living crisis is making it difficult for many people to pay their bills, including housing costs. Private sector rents have increased by an average 9% over the year to February 2024, and rising interest rates...

Reducing energy demand and improving efficiency will help prevent the next gas crisis

Gas prices have relaxed, Europe has come out of the winter with record gas storage levels and a surfeit of liquefied natural gas is set to reach the shores of Europe over the coming years. Many commentators are hopeful...

Politics

Gabon: post-coup dialogue has mapped out path to democracy – now military leaders must act

At the end of April 2024, a long and peaceful process of national dialogue in Gabon between the military junta, presided over by coup leader General Brice Oligui Nguema, and civil society, represented by 580 civilians,...

How German media attention idealises female Ukrainian refugees

According to the latest available data, around 3.7 million Ukrainians are internally displaced, while nearly 6.5 million have registered as refugees globally. With 1.13 million, Germany has taken in the largest...

Over 26 million South Africans get a social grant. Fear of losing the payment used to be a reason to vote for the ANC, but no longer – study

Social grants to reduce poverty feature prominently in the campaign promises of political parties in South Africas 2024 national and provincial general elections, set for 29 May. The countrys social grants system is one...

Donald Trump Allegedly Offers Oil Execs a Deal to Scrap EV Incentives for $1B Donation

Former President Donald Trump reportedly proposed a $1 billion deal to oil executives, offering to end electric vehicle (EV) subsidies in return for campaign funding, according to The Washington Post. This move underscores...

US Supreme Court upended decades of precedent in 2022 by allowing voters to vote with gerrymandered maps instead of fixing the congressional districts first

For the 2022 midterm elections, the U.S. Supreme Court allowed Alabama to use congressional districts that violated the law and diluted the voting power of Black citizens. A 5-4 vote by the Supreme Court in February...

Science

Is dark matter’s main rival theory dead? There’s bad news from the Cassini spacecraft and other recent tests

One of the biggest mysteries in astrophysics today is that the forces in galaxies do not seem to add up. Galaxies rotate much faster than predicted by applying Newtons law of gravity to their visible matter, despite those...

Why are algorithms called algorithms? A brief history of the Persian polymath you’ve likely never heard of

Algorithms have become integral to our lives. From social media apps to Netflix, algorithms learn your preferences and prioritise the content you are shown. Google Maps and artificial intelligence are nothing without...

IceCube researchers detect a rare type of energetic neutrino sent from powerful astronomical objects

About a trillion tiny particles called neutrinos pass through you every second. Created during the Big Bang, these relic neutrinos exist throughout the entire universe, but they cant harm you. In fact, only one of them is...

The Mars Sample Return mission has a shaky future, and NASA is calling on private companies for backup

A critical NASA mission in the search for life beyond Earth, Mars Sample Return, is in trouble. Its budget has ballooned from US$5 billion to over $11 billion, and the sample return date may slip from the end of this...

Dark matter: our new experiment aims to turn the ghostly substance into actual light

A ghost is haunting our universe. This has been known in astronomy and cosmology for decades. Observations suggest that about 85% of all the matter in the universe is mysterious and invisible. These two qualities are...

Technology

Tesla Cybertruck Trails Ford F-150 Lightning in Sales as Q1 Figures Disappoint Wall Street

New registration data reveals that the Tesla Cybertruck ranked second to the Ford F-150 Lightning in March. Meanwhile, Teslas Q1 sales missed Wall Street expectations, marking the first year-over-year quarterly decline...

Bitcoin Developers Tease Major Trigger for Next Bull Run: Programmability Upgrade

Bitcoin developers suggest enabling programmability on the blockchain could be the key trigger for the next bull run, following the SECs approval of spot Bitcoin ETF trading and the BTC halving. Developers Eye...

Top 3 Altcoins to Watch This Week: SOL, FTM, and LINK Set for Growth

This week, market experts spotlight Solana (SOL), Fantom (FTM), and Chainlink (LINK) as top altcoins to watch, highlighting their unique strengths and recent performance amid unusual market patterns. Solana Overcomes...

Ripple Warns: Math Prof Predicts Quantum Threat to Blockchain, Urges Crypto Key Overhaul

Ripple recently highlighted a warning from Professor Massimiliano Sala, urging the crypto industry to replace current public-key cryptosystems due to vulnerabilities exposed by advancing quantum technology. Professor...
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