Seminars Digest, Vol 89, Issue 8

Send Seminars mailing list submissions to seminars@itp.ac.ru To subscribe or unsubscribe via the World Wide Web, visit https://mailman.itp.ac.ru/mailman/listinfo/seminars or, via email, send a message with subject or body 'help' to seminars-request@itp.ac.ru You can reach the person managing the list at seminars-owner@itp.ac.ru When replying, please edit your Subject line so it is more specific than "Re: Contents of Seminars digest..." Today's Topics: 1. Friday 30.10.2026 (info+seminars@itp.ac.ru) ---------------------------------------------------------------------- Message: 1 Date: Tue, 27 Oct 2026 07:02:01 +0000 From: info+seminars@itp.ac.ru To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru Subject: [Landau ITP Seminars] Friday 30.10.2026 Message-ID: <Ftwf3lLu4YtsquGAnkM0KQFrVDn8dO6YwnshHe4y5Q@wwwserv2> Content-Type: text/plain; charset=UTF-8 Уважаемые коллеги! На заседании Ученого совета ИТФ в пятницу 30.10 будет заслушан 1 доклад: 11:30 В. П. Рубан Туннелирование трехмерных векторных волновых структур в нелинейной оптике В докладе будут обсуждаться процессы туннелирования трехмерно захваченных световых волн в средах с керровской нелинейностью. Получены новые результаты: 1. Теоретически рассмотрен слабонелинейный режим радиального туннелирования световой волны в сферическом брэгговском диэлектрическом резонаторе, содержащем ряд ``оболочечных&#039;&#039; мод (как TM, так и TE типа) с различными азимутальными числами $l\geq 1$, которые сосредоточены вблизи ``дефекта&#039;&#039; брэгговской структуры на радиусе в несколько слоев. При этом в центре резонатора имеется всего одна радиальная мода (либо TM, либо TE), и у нее $l=1$. Нелинейность керровского вида в главном приближении актуальна только для центральной моды, тогда как все оболочечные моды остаются в линейном режиме. Туннелирование происходит между центральной модой и оболочечной модой с $l=1$ и такой же симметрией. Нетривиальная часть динамики оптического поля описывается гамильтоновой системой обыкновенных дифференциальных уравнений для двух комплексных векторов , которые определяют амплитуду и пространственную ориентацию волновых структур соответственно в центре резонатора и в оболочке. В зависимости от ``параметра асимметрии&#039;&#039; туннельной связи, система демонстрирует различные варианты нелинейной динамики [1]. 2. Для эффективно изотропной ENZ-среды с учетом керровской нелинейности, слабой пространственной неоднородности, диссипации и внешней накачки численно исследовано туннелирование специфических тороидальных световых структур между двумя пространственно разнесенными потенциальными ямами в рамках соответствующего векторного уравнения Гинзбурга-Ландау [2]. Динамика приближенно описывается замкнутой системой обыкновенных дифференциальных уравнений, где наряду с нелинейностью и туннелированием также учитываются диссипативные эффекты, в том числе и те, что обусловлены возбуждением (в неоднородной среде) слабого коротковолнового потенциального электрического поля [3]. [1] V.P. Ruban, Nonlinear tunnel oscillations of light in spherical Bragg resonators, arXiv:2608.19731 (2026). [2] В. П. Рубан, Численное моделирование световых структур в объемных ENZ-средах с керровской нелинейностью, Письма в ЖЭТФ, 123(2), 105-112 (2026). [3] В. П. Рубан, Трехмерное векторное туннелирование оптической волны в ENZ-среде, Письма в ЖЭТФ, 123(10), 706-711 (2026). ID и пароль онлайн-трансляций в Zoom те же, что и для предыдущих трансляций семинаров и докладов на Ученом совете: https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09 Meeting ID: 968 9936 4518 Пароль: 250319 ------------------------------ Subject: Digest Footer _______________________________________________ Seminars mailing list Seminars@itp.ac.ru https://mailman.itp.ac.ru/mailman/listinfo/seminars ------------------------------ End of Seminars Digest, Vol 89, Issue 8 ***************************************

Ukraine wants own satellites after Starshield | NASA Artemis update today | Van Gogh 'The Starry Night' mystery solved! |

Van Gogh 'The Starry Night' mystery solved! | After Starshield, Ukraine wants its own satellites | Watch NASA's Artemis moon plan update today Created for znamenski.spacecom@blogger.com | Web Version   October 23, 2026 FOLLOW US FOLLOW US   Taking you out of this world, every day SIGN UP ⋅   WEBSITE   The Launchpad Van Gogh 'The Starry Night' mystery solved! Happy Friday, Space Fans! After more than a century, an artsy space mystery may finally be solved: When did Van Gogh actually paint his masterpiece "The Starry Night"? Find out when in the story above! And of course, we do have a bit more for the weekend. After the Starshield outage, Ukraine wants its own satellite network, a private lander is nearly ready for the moon and there's yet even more. See it all below! When did he paint it? Trending After Starshield, Ukraine wants its own satellites Ukraine's military just signed a letter of intent with Nokia and the Finnish satellite maker ICEYE to look into developing a sovereign satellite-communication system for the war-torn nation. When could they fly?   Spaceflight Watch NASA's Artemis moon plan update today This is a reminder to watch NASA's update about its Artemis III mission and its plans to land astronauts on the moon during a press conference today. Here's how. Moon landing when? Europe's Space Rider crashes to Earth The full-scale prototype of Europe's Space Rider orbiter failed to deploy its parachute during a drop test this month, but ESA officials hope the setback won't delay progress toward its first reusable spacecraft. RIP, Space Rider Skywatching 10 Egyptian monuments for 2027 solar eclipse The "eclipse of the century" will plunge some of ancient Egypt's most spectacular sites into darkness on Aug. 2, 2027. These temples, tombs and monuments are inside the path of totality. Here's 10 of our favorites. What would Tut think? Today in Space A Griffin on the moon? It's nearly ready... It's a bit behind schedule, but this robotic Griffin lander has passed a host of critical tests ahead of its first-ever moon mission, which is scheduled to launch later this year. See how the Voyager Technologies probe is doing (and what it will carry) in our photo of the day here. Next stop, moon Editor's Note Have a great weekend! That's going to be a wrap for our space updates for the week. Be on the lookout for our return on Monday, when we'll have the latest on NASA's Artemis moon plans from today's press conference (or you can simply visit us on Space.com later this afternoon!). And don't forget, you can stay up to date with all things space with our Space.com app available now on iOS and Android in your favorite app store. It's FREE! Keep looking up! Tariq Malik Editor-in-Chief, Space.com Stay up-to-date on all things space science, news, and entertainment by subscribing to our newsletters. Sign Up   Follow SPACE Contact Us: Feedback | Advertise Sign Up | Update Profile | Unsubscribe Privacy Policy | Cookies Policy | Terms and Conditions When you purchase through links in our content, we may earn an affiliate commission.   Future US LLC © Full 7th Floor, 130 West 42nd Street, New York, NY, 10036

The truth is once again out there — Watch This Space — October 2026

October intro | 'We basically did Top Gun in space': 'Star Trek Starfleet Academy' warps back into action in March 2027 for sophomore year in the final frontier | 10 times 'Red Dwarf' beat other TV shows and movies to brilliant sci-fi ideas Created for znamenski.spacecom@blogger.com | Web Version   October 23, 2026 FOLLOW US FOLLOW US   "I've seen things you people wouldn't believe" SIGN UP ⋅   SHARE It's always a disconcerting feeling when there isn't a Star Trek show on. You know what I mean? It doesn't matter if the Star Trek is good; I just feel better knowing it's there.  Well, we're going to have to get used to it, I guess, because the future isn't looking bright for fans of the final frontier. Strange New Worlds season 4 — AKA all the gimmick episodes you can handle — has wrapped up, and we've got to wait until March 2027 for Starfleet Academy season 2.  That six-month gap isn't the issue, though; the problem is that — after Starfleet Academy S2 — there is no confirmed Star Trek at all. Paramount's recent merger with Warner Bros. (and all the politics and alleged Elon Musk involvement that go along with that) doesn't make me optimistic for the future of Trek either, so it looks like we're heading into another dark time for Trekkies. On the plus side, though, The X-Files is getting rebooted, and Blade Runner 2099 is coming out in November, so it's not all bad for sci-fi fans. I can get behind that, and if it comes to that, I'll just rewatch old episodes of Red Dwarf and remember all the times it beat serious sci-fi shows to the punch in covering sci-fi concepts. If I thought Star Trek's future prospects were depressing, here comes the entire games industry to say, "Hold my beer." Between Microsoft having no idea what to do with sci-fi icons like Halo and Gears, and EA shelving the Mass Effect franchise to chase infinite profits with an open-world football game, things are looking equally bleak over here too. Ah well, perhaps Exodus will scratch the Mass Effect itch when it drops next year. OK, enough wallowing in the pits of despair, because we've had some great articles on Space this month. We chatted to Matt Dinniman, author of the excellent Dungeon Crawler Carl series, about his inspirations and the upcoming Peacock show adaptation. We spoke with sci-fi legend Alan Dean Foster about his latest sci-fi novel, Lost on Paradise. Another way to escape the misery of modern existence is to dive into the nostalgia well, and you better believe we took a splash or two this month. We looked back at Star Trek: Enterprise for its 25th anniversary (the definition of "I'm glad the Trek is here, even if it's mostly bad"), and we celebrated Galaga's 45th anniversary, and we even did a deep dive on the UFO level from Tomb Raider 3. Where else are you going to find that kind of reporting? Nowhere; that's where. OK, I'm off to play Galactic Racer and smash Biddy Blas into a canyon wall. Have a great weekend, folks, and I'll see you out there. Ian Stokes, Entertainment Editor, Space   P.S. Got any feedback for us? Drop us an email at community@space.com. Be nice, or we'll get EA to close you down Watch This Space 'We basically did Top Gun in space': 'Star Trek Starfleet Academy' warps back into action in March 2027 for sophomore year in the final frontier The sophomore season of "Star Trek: Starfleet Academy" will warp back to the small screen in March 2027 when the limited series returns for its final season on Paramount+. Read the full article 10 times 'Red Dwarf' beat other TV shows and movies to brilliant sci-fi ideas The British sitcom has always been a breeding ground for memorable genre concepts. Read the full article New 'Blade Runner 2099' trailer is a space fan's dream with sinister starships and strange exoplanets (video) 'More human than human. That's not a slogan; it's a shackle' Read the full article 'The X-Files' is officially returning as Hulu picks up Ryan Coogler's 'reimagining' of the sci-fi icon Trust no one. Read the full article Play This Space Next Mass Effect game cancelled as EA shuts down legendary sci-fi RPG studio BioWare The legendary RPG studio behind classics such as Star Wars: Knights of the Old Republic, Mass Effect, and Dragon Age is no more. Read the full article Alien: Isolation 2: This highly anticipated sequel has no release date yet, but here's everything else we know More than a decade after the original, Sega and Creative Assembly are bringing back a true Alien survival horror experience. Read the full article How the impossible geometry of 'Tomb Raider III''s UFO level was made Bigger on the inside? Where have we heard that before? Read the full article Pokémon GO and ESA team up to offer time-limited Astronaut Pikachu: here's how to get it Fly (or surf) over to participating science and space museums across Europe to catch the space suit-wearing version of this iconic Pokémon. Read the full article Read This Space 'Dungeon Crawler Carl' author Matt Dinniman talks inspirations, success, and the upcoming Peacock TV series (interview) 'Luckily I’m still in love with this story, and I am in love with writing it.' Read the full article Sci-fi legend Alan Dean Foster on his new futuristic adventure 'Lost On Paradise': 'It's paradise until you get there, and then maybe you mess it up' (interview) 'Maybe Paradise isn’t always Paradise.' Read the full article Remember This Space 'That man is playing 'Galaga'': 45 years of the iconic sci-fi arcade shooter Flying in formation for 45 years. Read the full article 'Star Trek: Enterprise' at 25: The Trek show that failed to live long and prosper Star Trek: Enterprise is far from the best in the franchise, but it has aged better than expected. Read the full article 'Heroes' at 20: The hit show that brought superheroes to primetime The superhero series that burned so very brightly before crashing back down to earth. Read the full article Stay up-to-date on all things space science, news, and entertainment by subscribing to our newsletters. Sign Up Follow Space.com Contact Us: Feedback | Advertise Sign Up | Update Profile | Unsubscribe Privacy Policy | Cookies Policy | Terms and Conditions When you purchase through links in our content, we may earn an affiliate commission.   Future US LLC © Full 7th Floor, 130 West 42nd Street, New York, NY, 10036