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Ivan Mashchenko
Attends School of Hard Knocks
Lives in Prague, Czech Republic
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Ivan Mashchenko

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Northern Lights on a Distant World

Brown dwarfs are like the Pluto of stars. While they are large enough to produce heat like a star, they are not large enough to fuse hydrogen in their cores like our Sun and other stars. They typically have a mass between 20 and 70 Jupiters, and one of the central questions has been whether they are more planet-like or star-like. New research published in Nature points to a more planetary nature by discovering bright aurora on a brown dwarf. 

Aurora, commonly known as northern lights, occur when high energy charged particles strike the Earth’s upper atmosphere, causing it to glow. They occur largely at the polar regions because of an interaction between the charged particles and the Earth’s magnetic field. While they are common on Earth, they are also found on other planets like Jupiter that have a strong magnetic field. Stars, on the other hand, don’t have aurora.

We’ve known for quite a while that the surface temperatures are rather cool. The most massive brown dwarfs can have temperatures about half that of the Sun, while the smallest brown dwarfs can have surface temperatures no warmer than an oven. But whether their atmospheres are more like that of stars or planets has been an unanswered question.  In this new work, the team noticed a brown dwarf that emitted bursts of strong radio energy about once every 2.8 hours. This pulsar-like behavior could be caused by charged particles interacting with the dwarf’s strong magnetic field, or it could be due to interactions with its atmosphere. To find out the team observed the object in the visible spectrum. What they found was that the spectrum matched that of hydrogen that has been struck by charged particles. In other words, these bursts are due to very bright aurora.

This is the first case of aurora being observed on an object outside our solar system. Combined with other research that shows brown dwarfs can have clouds, it’s clear that the atmospheres of brown dwarfs are more planet-like than star-like.

Paper: G. Hallinan et al. Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence. Nature. Vol. 523, p. 568. doi: 10.1038/nature14619 (2015)
Brown dwarfs are like the Pluto of stars. New research published in Nature points to a more planetary nature by discovering bright aurora on a brown dwarf.
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Память 3D Xpoint в 1000 раз быстрее NAND

Компании Intel и Micron анонсировали энергонезависимую память 3D Xpoint (читается как «кросс-поинт»), которую позиционируют, как первую на рынке память «нового типа» с 1989 года. Новые чипы в ближайшее время должны существенно ускорить работу всего, начиная от сотовых телефонов и заканчивая суперкомпьютерами.
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Интересно. Хотя на счет 1000 раз я думаю маркетологи погорячились. ;)
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On the Edge
Lubec, Maine

Back from spending most of the week in Maine chasing dark skies. And the weather certainly did not disappoint! This was taken from the cliffs at Quoddy Head State Park, overlooking Quoddy Channel that separates the U.S. and Canada.

The image is a blend of several frames, including a long 15-minute exposure to extract details from the foreground rocks and water. The light streak on the far cliffs on the right is from nearby West Quoddy Head Light.

#landscapephotography   #landscapephoto   #landscapepicture   #naturephotography   #naturephotos   #naturemonday   #nightphotography   #milkyway   #milkywayphotography   #seascape   #seascapephotography   #coast   #newengland   #maine  
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При этом из гробика будет звучать: "та-ти!" "ти-та!" (типа "оборудование найдено" и "оборудование отключено").
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Gosi-Chon, Seoul, Korea
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Когда небеса спустились на землю
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Красота какая 
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Nothing to see here, move along bro
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A twisted mentat
IT consultant and project manager, Scala & C# & T-SQL developer, SMB IT system engineer, hotel and travel agency manager, business negotiatior, UX and business process critic, QA enthusiast, certified Rockwell Arena simulation modelling speciallist and trainer, fluent English, Russian and Czech speaker
  • IT consultant and project manager, present
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Prague, Czech Republic
Saint-Petersburg, Russian Federation - Yekaterinburg, Russian Federation - Vyborg, Russian Federation - Říčany, Czech Republic - Siegen, Germany
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Jedem das seine
In general

I am a person of very wide tastes and interests. I enjoy everything that «has a heart» (© C. Castañeda). I enjoy to meet and try to understand different people, to study and master different new things, to explore, to feel, to taste, to understand.

Having some areas of professional expertise secured and going further I consider myself a generalist rather than a specialist. The ultimate goal of a generalist is being a polymath and reconstructing the whole puzzle, the ultimate goal for a specialist as he specializes is, saying roughly, knowing everything about nothing. «... specialization is for insects.» " (© Lazarus Long (R. A. Heinlein)) :-)

In practice

I mostly earn my bread from working in the IT industry and its crossings with finance, media and travel industries.

My favourite programming languages are Scala and C# but I can use many other languages if they fit better (for a particular task). I use Linux (XUbuntu) as my primary OS (I also like Windows XP, FreeBSD, QNX and DOS). I am a certified Rockwell Arena simulation engineer and trainer.

Location and communication

I live in Prague, Czech Republic (and feel it being the best place in the world I have been to, according to my taste).

I can speak English, Russian and Czech languages fluently. I can understand Slovak, Ukrainian and Belorussian with almost the same ease. I've also got some basic skills in French (used to speak near fluently but have forgotten because of lack of practice), German (studying right now) and Polish. Needless to say I am fond of languages.

I prefer e-mail as the main communication channel, Skype when an audial conversation feels more convenient and Google+ as a social network. I am glad to meet exciting people from all over the world.

Social networking policy

All my posts are either public (the majority) or personal. I make no limited or circle-specific and almost no community posts.

I can hardly be insulted religiously (though I am not a pure atheist and don't advocate abuse) or any way alike. I never report posts other than those I can qualify as SPAM. At the same time I can myself post or reshare something of questionable appropriateness on occasion - if you are going to dislike that and don't want to see anything like that in your stream (or, for example, if your underage children can access your Googe+ on occasion) I strongly encourage you to unfollow and, if necessary, block me rather than to report.

I rarely post any original content. I mostly reshare whatever catches my eye. But I am not a bot and am prone to very active discussion participation in comments.

I use to review people who starts following me (as far as Google+ notifies me about it) and follow back if the profile seems an alive, interesting personality (I also don't mind explicit content or content of questionable appropriateness). But don't bother following me if you're a bot or a network marketer doing it just to get me follow back. If you think I might like following you but believe I have missed your emergence - please don't hesitate to leave a comment at a post of mine or contact me personally.

If you can't see any activity from my side for a relatively long period of time - that most probably neither means I'm dead nor I have given up using Google+. Some times I just need some solitude.

Religious views

What I usually testify to be my "religion" is agnosticism, a mild meritocratic, somewhat stoic sort. I personally believe that the G-d (whatever meaning we consider) speaks to one through his own reason and conscience and rarely through the mouths of clerics. I generally dislike fanaticism, excessive ritualism, dogmatism and clericalism, and condemn anti-secular, anti-education, anti-ecumenism, anti-sexuality and anti-equality parts. At the same time I think that almost all the religious, esoteric and philosophical teachings, as well as cultures and sciences harbour a piece of divine wisdom so I respect their followers as far as they act peacefully and with respect to others. Among the deadliest sins I condemn are hypocrisy, ignorance and their promotion. Among the key merits I value are intelligence, knowledge and honesty of a person to oneself (and to others of course but being honest to oneself is essential).

Political views

A state policy of my dream is liberal social technocracy. Liberal because people are to be free (while, not to forget, security (including social) is a precondition to freedom), social because taking care of the basic social as well as physical security is the ultimate function of a state and almost the only obvious reason for a state to exist (without it anarchy seems no worse), technocracy because serious things are to be engineered and driven a mindful way, by accordingly qualified professionals.
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Иван Мащенко, Maščenko, Mascenko, Maschenko, Machtchenko