Latest news with #MichaelJanssen
NDTV
3 days ago
- Science
- NDTV
Is Our Black Hole Defying Physics? New AI Study Challenges Theories
Astronomers, using AI and high-throughput computing from the University of Wisconsin-Madison's CHTC, have unlocked new insights into Sagittarius A* - the supermassive black hole at the heart of our galaxy. By training a neural network on millions of simulations, researchers found the black hole is spinning near its maximum speed, with its axis of rotation aimed toward Earth. The findings are based on data from the Event Horizon Telescope and offer fresh understanding of black hole behaviour. The AI also suggests that the emission near the black hole is primarily from extremely hot electrons in the accretion disk rather than a jet, and that the magnetic fields in the disk behave differently than previously thought. This research, published in Astronomy & Astrophysics, was made possible by high-throughput computing, a distributed computing method pioneered by Miron Livny, which allowed researchers to process a massive amount of data efficiently. "That we are defying the prevailing theory is, of course, exciting," says lead researcher Michael Janssen, of Radboud University Nijmegen, the Netherlands. "However, I see our AI and machine learning approach primarily as a first step. Next, we will improve and extend the associated models and simulations." "The ability to scale up to the millions of synthetic data files required to train the model is an impressive achievement," adds Chi-kwan Chan, an Associate Astronomer of Steward Observatory at the University of Arizona and a longtime PATh collaborator. "It requires dependable workflow automation and effective workload distribution across storage resources and processing capacity." "We are pleased to see EHT leveraging our throughput computing capabilities to bring the power of AI to their science," says Professor Anthony Gitter, a Morgridge Investigator and a PATh Co-PI. "Like in the case of other science domains, CHTC's capabilities allowed EHT researchers to assemble the quantity and quality of AI-ready data needed to train effective models that facilitate scientific discovery." The NSF-funded Open Science Pool, operated by PATh, offers computing capacity contributed by more than 80 institutions across the United States. The Event Horizon black hole project performed more than 12 million computing jobs in the past three years. "A workload that consists of millions of simulations is a perfect match for our throughput-oriented capabilities that were developed and refined over four decades", says Livny, director of the CHTC and lead investigator of PATh. "We love to collaborate with researchers who have workloads that challenge the scalability of our services."
Yahoo
3 days ago
- Science
- Yahoo
Our Galaxy's Monster Black Hole Is Spinning Almost as Fast as Physics Allows
The colossal black hole lurking at the center of the Milky Way galaxy is spinning almost as fast as its maximum rotation rate. That's just one thing astrophysicists have discovered after developing and applying a new method to tease apart the secrets still hidden in supermassive black hole observations collected by the Event Horizon Telescope (EHT). The unprecedented global collaboration spent years working to give us the first direct images of the shadows of black holes, first with M87* in a galaxy 55 million light-years away, then with Sgr A*, the supermassive black hole at the heart of our own galaxy. These images are incredible – but also difficult to interpret. So, to figure out what we're looking at, scientists turn to simulations. They build a bunch of virtual characteristics, and figure out which of them most resemble the observational data. This technique has been used a lot with the EHT images, but now it's been kicked up a notch. A team led by astronomer Michael Janssen of Radboud University in the Netherlands and the Max Planck Institute for Radio Astronomy in Germany used high-throughput computing to develop millions of simulated black holes. Then, they used that data to train a neural network to extract as much information as possible from the data, and identify the properties of the black holes. Their results show, among other things, that Sgr A* is not only spinning at close to its maximum speed, but that its rotational axis is pointed in Earth's direction, and that the glow around it is generated by hot electrons. Perhaps the most interesting thing is that the magnetic field in the material around Sgr A* doesn't appear to be behaving in a way that's predicted by theory. M87*, they discovered, is also rotating rapidly, although not as fast as Sgr A*. However, it is rotating in the opposite direction to the material swirling in a disk around it – possibly because of a past merger with another supermassive black hole. "That we are defying the prevailing theory is of course exciting," Janssen says. "However, I see our AI and machine learning approach primarily as a first step. Next, we will improve and extend the associated models and simulations. And when the Africa Millimetre Telescope, which is under construction, joins in with data collection, we will get even better information to validate the general theory of relativity for supermassive compact objects with a high precision." The team has detailed their methodology and findings in three papers published in Astronomy & Astrophysics. They can be found here, here, and here. Did a Passing Star Cause Earth to Warm 56 Million Years Ago? A Game-Changing Telescope Is About to Drop First Pics. Here's How to Watch. Trailblazing Satellite Mission Delivers Its First Artificial Solar Eclipse
Globe and Mail
13-02-2025
- Business
- Globe and Mail
ANA InterContinental Tokyo unveils Icon Reborn transformation
TOKYO, Feb 13, 2025 - (JCN Newswire) - ANA InterContinental Tokyo unveils its transformational 15-month renovation. Redesigned for today's modern luxury traveller, the hotel presents 801 revitalised rooms alongside new dining and social concepts. This marks the beginning of the next chapter in the property's over 35-year legacy, further cementing InterContinental's reputation as a leader of approachable luxury hospitality, ensuring that guests can continue to explore the world while feeling right at home. ANA InterContinental Tokyo's redesigned rooms seamlessly harmonise Japanese craftsmanship with contemporary elegance, ensuring every guest experiences rest and relaxation. Motifs highlight the concept of 'origami' to embody the essence of 'unfolding Tokyo' as guests do when discovering their destination. Dining and social spaces have been designed to create environments where both guests and locals can satisfy their desire for knowledge and culturally rich experiences. The ambiance at the renowned MIXX Bar & Lounge is elevated for extraordinary celebrations, while the expanded Club InterContinental Lounge, now spanning two dedicated floors — provides an exclusive space to work, meet, or socialise, while overlooking Tokyo's dynamic cityscape. The new Genever Lobby Bar, rejuvenated Cascade Cafe, and transformed Atrium Lounge each uniquely reflect Japan's rich traditions and captivating culture. Michael Janssen, General Manager of ANA InterContinental Tokyo, commented: 'This transformation marks an exciting new chapter for ANA InterContinental Tokyo, enhancing the guest experience with refined elegance. Every detail, from the exquisitely redesigned rooms to the dynamic dining and social venues, has been thoughtfully curated to captivate and inspire today's modern luxury traveller. We remain committed to delivering an unparalleled five-star experience for the traveller of today and tomorrow, combining world-class service with timeless sophistication to create extraordinary moments that create lasting memories long cherished for many years after our guests have checked out.' The renovation of ANA InterContinental Tokyo brings to life the hallmarks of the InterContinental brand's evolution, which is being rolled out globally. As the world's first and largest luxury hotel brand, InterContinental has been pioneering travel experiences for over 75 years. This transformative, end-to-end brand evolution is reimagining the luxury travel experience for today's modern luxury traveller, rooted in the brand's core belief that travel has the power to expand minds and connect cultures. A New Standard of Hospitality and Design Situated in the heart of Tokyo, ANA InterContinental Tokyo embodies the city's vibrant energy through thoughtfully designed elements that celebrate Japanese heritage. Redesigned guest rooms feature geometric patterns inspired by origami, complemented by custom carpeting that pays homage to cherry blossoms, set against a backdrop of traditional hues such as Sakura pink and pale indigo (kamenozoki). The redesigned rooms also introduce two exclusive suite categories — Mizu and Sora Suites — which offer an elevated Japanese aesthetic with contemporary comforts. This variety, attention to detail, and thoughtful design ensure that each stay provides an authentic yet modern interpretation of Japan's rich cultural tapestry Elevating the Club InterContinental Experience The Club InterContinental Lounge has been expanded across the 35th and 36th floors. Inspired by the tranquillity of a Japanese garden, the newly introduced 36th floor harmoniously blends traditional tea ceremony elements with modern sophistication high above the city. Guests staying in Club InterContinental Rooms and Suites can enjoy exclusive privileges, including personalised service, a bespoke breakfast, all-day refreshments, curated cultural activities, and thoughtfully designed menus for little ones. Reimagined Culinary and Social Experiences The hotel's extensive renovation goes beyond accommodations, redefining its dining and gathering spaces to offer an unparalleled culinary journey in the heart of Tokyo. Cascade Cafe has been reimagined with an open and immersive design, inviting guests on a global culinary journey featuring dishes from over 10 countries. Enhanced by interactive cooking stations, the buffet concept offers an engaging experience where guests can witness authentic culinary techniques first-hand. Atrium Lounge unveils a sophisticated new design alongside the innovative 'Marketplace' concept, seamlessly blending convenience with luxury. Mobile ordering enhances the dining experience, while the ever-popular seasonal Afternoon Tea remains a highlight for both locals and international visitors. Genever Lobby Bar the hotel's latest addition offers a cosy yet refined setting where tradition meets innovation. Signature gin-based cocktails include the exclusive Last Elysium, a sustainable in-house creation made from sake kasu and orange peels reflecting a commitment to sustainability and exceptional quality. MIXX Bar & Lounge perched on the 36th floor, has been revitalised to enhance its panoramic skyline views, offering an elevated dining and social experience in an ambience that effortlessly blends luxury with contemporary vibrancy. Together, these enhancements reaffirm ANA InterContinental Tokyo's position as a leading luxury destination for refined stays, business gatherings, and social celebrations. With an unwavering commitment to hospitality excellence, cultural authenticity, and contemporary innovation, ANA InterContinental Tokyo continues to set new benchmarks in one of the world's most dynamic cities. InterContinental Hotels & Resorts is one of six brands within IHG's rapidly expanding Luxury & Lifestyle portfolio — now the second largest in the world. Today, the brand boasts a portfolio of 226 InterContinental Hotels & Resorts across 68 countries, with an additional 97 properties in the pipeline. With unique perspectives shaped by unrivalled destination expertise, InterContinental opens doors to a world of fascination. Image Library Pictures for download About ANA InterContinental Tokyo ANA InterContinental Tokyo redefines luxury with its extensive 2024 renovation, unveiling 801 newly redesigned guest rooms that blend Japanese-inspired origami aesthetics with contemporary design. With 13 restaurants and bars and 22 event spaces, the hotel's dining and social experiences have been elevated to new heights, enhancing Tokyo's dynamic culinary scene. Highlights include Cascade Cafe, MIXX Bar & Lounge, and the Atrium Lounge, now home to the newly introduced Genever Lobby Bar. Guests can also enjoy the city's largest Club InterContinental, spanning the 35th and newly added 36th floor. Conveniently located near vibrant districts such as Ginza and Roppongi, ANA InterContinental Tokyo seamlessly combines elegance, convenience, and authentic Japanese hospitality. For more information, please visit and connect with us on Instagram. About InterContinental Hotels & Resorts InterContinental Hotels & Resorts is the world's first and largest luxury hotel brand, with over 225 hotels across 68 countries, representing more than 73,500 bedrooms worldwide. Founded in 1946 by Pan American Airways' founder, Juan Trippe, InterContinental is guided by the belief in the power of travel to expand the mind and connect cultures. Opening doors to a 'world of fascination', InterContinental is reimagining the luxury travel experience with the modern luxury traveller at its heart. Striking a harmonious balance between freedom and familiarity, the brand is dedicated to fulfilling guests' desire for knowledge and culturally rich experiences, building on its legacy as a beacon of approachable luxury travel. For more information and to book, visit and connect with us on Facebook and Instagram. ]]> Source: ANA InterContinental Tokyo Copyright 2025 JCN Newswire . All rights reserved.
