Friday, December 16, 2022

Soyuz capsule leak could strand 3 astronauts on ISS

Created for znamenski.spacecom@blogger.com |  Web Version
December 16, 2022
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The Launchpad
Soyuz capsule leak could strand 3 astronauts on ISS
(NASA TV)
If something goes wrong aboard the International Space Station, some crew members will have to stay behind.
Full Story: Space (12/16) 
SpaceX launches NASA satellite to study world's water
(NASA)
"Anyone who cares about water should be concerned about what SWOT can provide," one scientist said.
Full Story: Space (12/16) 
POLL QUESTION:
Space quiz! NASA's Ingenuity helicopter now has three dozen Mars flights under its belt. Ingenuity and the Perseverance rover are currently exploring which Martian landmark?
Learn the answer here!
VoteJezero Crater
VoteOlympus Mons
VoteValles Marineris
VoteMedusae Fossae
Space Deal of the Day
Holiday sale: Save 32% on All About Space magazine
(Future)
Subscribe to All About Space today from just $8.77 per issue, in this holiday sale, saving you a massive 32%.
Full Story: Space (11/25) 
Skywatching
See the final last quarter moon of 2022 rise tonight
(ADEL SENNA/AFP/Getty Images)
On Friday (Dec. 16), the moon will enter its last quarter phase for the final time in 2022 with the lunar disk exactly half-illuminated.
Full Story: Space (12/16) 
Rare pink and orange auroras surprise skywatchers
(Markus Varik)
Norwegian skywatchers were stunned by extremely rare pink and orange auroras glimmering above the frozen landscape.
Full Story: Space (12/16) 
Science & Astronomy
Strange twin planets might be water worlds
(ESA/Hubble, M. Kornmesser)
Two planets found by NASA's retired Kepler Space Telescope may be made mostly of water, according to new research.
Full Story: Space (12/15) 
James Webb Space Telescope's best images of all time
(NASA, ESA, CSA, STScI; J. DePasquale, A. Koekemoer, A. Pagan (STScI))
The infrared observatory has a unique view of the universe.
Full Story: Space (12/16) 
SpaceX
Watch SpaceX launch 2 telecom satellites to orbit Friday
(SpaceX)
SpaceX will launch two satellites for the telecom company SES on Friday (Dec. 16), and you can watch the action live.
Full Story: Space (12/16) 
Spaceflight
Rocket Lab's 1st US launch may be visible on East Coast
(Rocket Lab)
Even if you aren't at the launch, you might still be able to watch the Electron rocket send six satellites to orbit.
Full Story: Space (12/15) 
Mars helicopter Ingenuity aces 36th Red Planet flight
(NASA/JPL-Caltech)
Ingenuity stayed aloft for just over a minute on Dec. 10.
Full Story: Space (12/15) 
 
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Seminars Digest, Vol 49, Issue 4

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Today's Topics:

1. Friday 16.12.2022 (Serge Krashakov)


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Message: 1
Date: Thu, 15 Dec 2022 13:11:17 +0300
From: Serge Krashakov <sakr@itp.ac.ru>
To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru
Subject: [Landau ITP Seminars] Friday 16.12.2022
Message-ID: <8581f1c4-3991-ad30-eace-9fd9345574b1@itp.ac.ru>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Уважаемые коллеги!

На заседании Ученого совета в пятницу  16 декабря в 11:30 будут
заслушаны 3 доклада:

1) _Е.С. Пикина_, А.Р. Муратов, Е.И. Кац, В.В. Лебедев
*Long-range interactions between membrane inclusions: Electric field
induced giant amplification of the pairwise potential*

The aim of this work is to revisit the phenomenological theory of the
interaction between membrane inclusions, mediated by the membrane
fluctuations. We consider the case where the inclusions are separated by
distances larger than their characteristic size. Within our macroscopic
approach a physical nature of such inclusions is not essential. However,
we have always in mind two prototypes of such inclusions: proteins and
RNA macromolecules. Because the interaction is driven by the membrane
fluctuations and the coupling between inclusions and the membrane, it is
possible to change the interaction potential by external actions
affecting these factors. As an example of such external action we
consider an electric field. Under external electric field (both dc or
ac), we propose a new coupling mechanism between inclusions possessing
dipole moments (as it is the case for most protein macromolecules) and
the membrane. We found, quite unexpected and presumably for the first
time, that the new coupling mechanism yields to giant enhancement of the
pairwise potential of the inclusions. This result opens up a way to
handle purposefully the interaction energy, and as well to test of the
theory set forth in our article.
Results are published in Annals of Physics 447(Pt.2), 168916 (2022)


2)  И.А. Дынников, _А.Я. Мальцев_, С.П. Новиков (короткий доклад)
*Структура угловых диаграмм для систем, описывающих динамику электрона в
магнитном поле для дисперсионных законов общего положения*

Мы приведем ряд результатов, существенно уточняющих описание угловых
диаграмм, возникающих при исследовании динамики электрона в магнитном
поле на всех энергетических уровнях одновременно. Описание позволяет
ввести определенную иерархическую структуру на множестве зон
устойчивости на таких диаграммах, а также описать более детально
множество возникновения сложных (хаотических) траекторий соответствующей
динамической системы.
ЖЭТФ, Том 162 (2), 276-292 (2022), УМН, том 77, выпуск 6(468), 109-136
(2022)

3) _А.Я. Мальцев_, С.П. Новиков (короткий доклад)
*Открытые линии уровня суперпозиции периодических потенциалов на плоскости*

Исследуется геометрия открытых линий уровня потенциалов, возникающих в
результате наложения двух различных периодических потенциалов на
плоскости. Эту задачу можно рассматривать как частный случай задачи
Новикова о поведении открытых линий уровня квазипериодических
потенциалов на плоскости с четырьмя квазипериодами. В то же время
постановка этой задачи может иметь много дополнительных особенностей. Мы
приведем общее описание складывающейся картины как в самом общем случае,
так и при наличии дополнительных ограничений. Основной подход к описанию
поведения открытых линий уровня основан на их разделении на
топологически регулярные и хаотические линии уровня.
Annals of Physics 447(Pt.2), 169039 (2022); arXiv:2206.04014


ID и пароль онлайн-трансляций в Zoom те же, что и для предыдущих
трансляций докладов на Ученом совете:
https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09
Meeting ID: 968 9936 4518
Пароль: 250319

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