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Mike Barela
Works at US Department of State
Attended California Institute of Technology
Lives in Frankfurt, Germany
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Mike Barela

Astronomy/ Astrophysics  - 
 
Via +David Brin 
NASA's Solar Probe Plus mission is moving ahead with its daring 2018 launch to study the sun's super-heated atmosphere.
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BULLSHIT! 
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Mike Barela

➥ Project/Product photos  - 
 
Have a few minutes? Sit down and make your NeoPixel Ring display Poke Ball colors. You can use the new Adafruit Circuit Playground or any rin connected to an Arduino compatible processor. Ultra simple, mega fun.
Just a quick post. I'm playing with NeoPixels lately. One set for my entry in the GE-Make-Hackster.io contest Lights for Life Challenge for one concept. The other is Adafruit's new Circuit Playground educational board. ...
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I reluctantly upgraded my main desktop to #windows10   then plugged in +Adafruit Industries  #circuitplayground   Win10 detected it (probably the Adafruit drivers were loaded via the Arduino IDE) and it immediately started to blink in colors, fun!
Adafruit Industries, Unique & fun DIY electronics and kits Circuit Playground [Developer Edition] ID: 3000 - Would you like to learn electronics, with an all-in-one board that has sensors and LEDs built in? Circuit Playground is here - and it's the best way to practice programming on real hardware with no soldering or sewing required!Circuit Playground features an ATmega32u4 processor, just like our popular Flora. The
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Trust me I had nothing but issues with Windows 10 when it came to Audrina unless they step up to the plate and fix their issues I will never put Windows 10 on any of my machines
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Did Starfleet ban travel back to this planet? Would an enemy race try to seize the planet and change something?
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They did go back to that planet in TAS Season 1 Episode 2
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Still no love finally getting #windows10  +Microsoft Corporation :(
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Mike Barela

Shared publicly  - 
 
 
Have a few minutes? Sit down and make your NeoPixel Ring display Poke Ball colors. You can use the new Adafruit Circuit Playground or any rin connected to an Arduino compatible processor. Ultra simple, mega fun.
Just a quick post. I'm playing with NeoPixels lately. One set for my entry in the GE-Make-Hackster.io contest Lights for Life Challenge for one concept. The other is Adafruit's new Circuit Playground educational board. ...
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Mike Barela

Astronomy/ Astrophysics  - 
 
 
X-ray Echoes of a Shredded Star Provide Close-up of 'Killer' Black Hole
 
Some 3.9 billion years ago in the heart of a distant galaxy, the intense tidal pull of a monster black hole shredded a star that passed too close. When X-rays produced in this event first reached Earth on March 28, 2011, they were detected by NASA's Swift satellite, which notified astronomers around the world. Within days, scientists concluded that the outburst, now known as Swift J1644+57, represented both the tidal disruption of a star and the sudden flare-up of a previously inactive black hole.
 
Now astronomers using archival observations from Swift, the European Space Agency's (ESA) XMM-Newton observatory and the Japan-led Suzaku satellite have identified the reflections of X-ray flares erupting during the event. Led by Erin Kara, a postdoctoral researcher at NASA's Goddard Space Flight Center in Greenbelt, Maryland, and the University of Maryland, College Park (UMCP), the team has used these light echoes, or reverberations, to map the flow of gas near a newly awakened black hole for the first time.
 
"While we don't yet understand what causes X-ray flares near the black hole, we know that when one occurs we can detect its echo a couple of minutes later, once the light  has reached and illuminated parts of the flow," Kara explained. "This technique, called X-ray reverberation mapping, has been previously used to explore stable disks around black holes, but this is the first time we've applied it to a newly formed disk produced by a tidal disruption."
 
Stellar debris falling toward a black hole collects into a rotating structure called an accretion disk. There the gas is compressed and heated to millions of degrees before it eventually spills over the black hole's event horizon, the point beyond which nothing can escape and astronomers cannot observe. The Swift J1644+57 accretion disk was thicker, more turbulent and more chaotic than stable disks, which have had time to settle down into an orderly routine. The researchers present the findings in a paper published online in the journal Nature on Wed., June 22. 
 
 
 
One surprise from the study is that high-energy X-rays arise from the inner part of the disk. Astronomers had thought most of this emission originated from a narrow jet of particles accelerated to near the speed of light. In blazars, the most luminous galaxy class powered by supermassive black holes, jets produce most of the highest-energy emission.
 
"We do see a jet from Swift J1644, but the X-rays are coming from a compact region near the black hole at the base of a steep funnel of inflowing gas we're looking down into," said co-author Lixin Dai, a postdoctoral researcher at UMCP. "The gas producing the echoes is itself flowing outward along the surface of the funnel at speeds up to half the speed of light."
 
X-rays originating near the black hole excite iron ions in the whirling gas, causing them to fluoresce with a distinctive high-energy glow called iron K-line emission. As an X-ray flare brightens and fades, the gas follows in turn after a brief delay depending on its distance from the source.   
 
"Direct light from the flare has different properties than its echo, and we can detect reverberations by monitoring how the brightness changes across different X-ray energies," said co-author Jon Miller, a professor of astronomy at the University of Michigan in Ann Arbor.
 
Swift J1644+57 is one of only three tidal disruptions that have produced high-energy X-rays, and to date it remains the only event caught at the peak of this emission. These star shredding episodes briefly activate black holes astronomers wouldn't otherwise know about. For every black hole now actively accreting gas and producing light, astronomers think nine others are dormant and dark. These quiescent black holes were active when the universe was younger, and they played an important role in how galaxies evolved. Tidal disruptions therefore offer a glimpse of the silent majority of supersized black holes.
 
"If we only look at active black holes, we might be getting a strongly biased sample," said team member Chris Reynolds, a professor of astronomy at UMCP. "It could be that these black holes all fit within some narrow range of spins and masses. So it’s important to study the entire population to make sure we’re not biased."
 
The researchers estimate the mass of the Swift J1644+57 black hole at about a million times that of the sun but did not measure its spin. With future improvements in understanding and modeling accretion flows, the team thinks it may be possible to do so.     
 
ESA's XMM-Newton satellite was launched in December 1999 from Kourou, French Guiana. NASA funded elements of the XMM-Newton instrument package and provides the NASA Guest Observer Facility at Goddard, which supports use of the observatory by U.S. astronomers. Suzaku operated from July 2005 to August 2015 and was developed at the Japanese Institute of Space and Astronautical Science, which is part of the Japan Aerospace Exploration Agency, in collaboration with NASA and other Japanese and U.S. institutions.
 
NASA's Swift satellite was launched in November 2004 and is managed by Goddard. It is operated in collaboration with Penn State University in University Park, the Los Alamos National Laboratory in New Mexico, and Orbital Sciences Corp. in Dulles, Virginia, with international collaborators in the U.K., Italy, Germany and Japan.
 
By Francis Reddy
NASA's Goddard Space Flight Center, Greenbelt, Maryland #nasa #spaceexploration
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Mike Barela

Astronomy/ Astrophysics  - 
 
The physicist Asimina Arvanitaki is thinking up ways to search gravitational wave data for evidence of dark matter particles orbiting black holes.
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Mathematics  - 
 
 
"After verifying his solution to the Carmichael numbers, Yu apparently wrote several universities about it, but they wouldn’t give him the times of day, because he was just a delivery man with no formal studies in mathematics. "

Real-Life Good Will Hunting – Chinese Delivery Man Discovers Simpler Solution to Complex Math Problem
http://www.odditycentral.com/news/real-life-good-will-hunting-chinese-delivery-man-discovers-simpler-solution-to-complex-math-problem.html
Yu Jianchun, a young delivery man from China, a man with no training in advanced mathematics, has found a simpler solution to the Carmichael numbers problem.
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Hopefully they can lower the price point a bit when the Kickstarter comes out, perhaps multiuse?
 
Meet the Cosmic Ray Detector.

The Geneva-based nuclear research team have created what they hope to be ‘the worlds largest open source distribution cosmic ray telescope’… trying saying that after a couple of Friday, post-work tipples!

For those not in the know (of which I was one), a cosmic ray is a high-enery particle that travels to the earth from space, and the ray detector hopes to, well, detect them.

The team aim for homes all over the world to build their own detectors, sharing back the information with the aim of better understanding the activity of the rays on earth.

I'll hand over to Cosmic Pi co-founder Cosimo Cantini to explain in greater detail...
Cosmic Pi makes each user a single pixel in an open source cosmic ray telescope.
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PASADENA, CA – If you think there’s nothing big left to be discovered, think again. Astronomers from Caltech keep finding more clues concerning a possible new planet in our solar system…
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People
Have him in circles
446 people
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Mike Barela's profile photo
titave hanumant's profile photo
DreamSourceLab's profile photo
Jeronimo Avelar Filho's profile photo
Eric Jennings's profile photo
oliva velkim's profile photo
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Work
Occupation
Electrical Engineer and Senior Foreign Service Officer
Employment
  • US Department of State
    Senior Foreign Service Officer, 1988 - present
  • Hewlett-Packard
    Disc Memory Division, 1981 - 1983
  • Jet Propulsion Laboratory
    Synthetic Aperture Radars, 1984 - 1985
  • Boeing Aerospace
    Senior Engineer, 1985 - 1988
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Frankfurt, Germany
Previously
Washington, DC - Helsinki, Finland - New Delhi, India - Sofia, Bulgaria - Athens, Greece - Pasadena, CA - Walla Walla, WA - Boise, ID - Seattle, WA - Concord, CA
Story
Tagline
Engineer, Diplomat, Maker
Bragging rights
Author of the book "Getting Started with Adafruit Trinket", Maker Media, 2014, available at Amazon.com, Adafruit.com, and other bookstores worldwide
Education
  • California Institute of Technology
    BS Electrical Engineering
  • Whitman College
    BA Math/Physics
Basic Information
Gender
Male
Relationship
Married
Mike Barela's +1's are the things they like, agree with, or want to recommend.
Ancient DNA study finds Phoenician from Carthage had European ancestry
phys.org

A research team co-led by a scientist at New Zealand's University of Otago has sequenced the first complete mitochondrial genome of a 2500-y

CBS This Morning Video - Workers at the company built an innovative 3-D ...
www.cbs.com

Silicon Valley startup Carbon is preparing to launch an invention that could change how many industries do business. Workers at the company

Fabric Shield Monthly Giveaway | Hack a Robot
hackarobot.com

Fabric Shield is the main circuit board that connects Arduino Nano to many sensors, motors and breakout boards. With fabric shield, you can

ESP8266 Temperature and Humidity Web Server - Experiment
kurtroesener.blogspot.com

Not the Raspberry Pi Experiment as promised - But a Learning Experience! Since I just received a couple of ESP8266s I wanted to play with th

Sardauscan, the Sub-$30 DIY 3D Scanner — Open Source 3D Printable Files ...
3dprint.com

The sooner that affordable 3D scanners are made available, the sooner the consumer side of the 3D printing market will expand. You see, curr

Adafruit Bluefruit LE Connect
market.android.com

Wirelessly connect your Android device to an Adafruit Bluefruit LE module for control & communication with Arduino.Features: • Update the fi

Killer Whales Spied from Drone's Eye View: Photos : DNews
news.discovery.com

For the first time, scientists have used an unmanned aerial vehicle to photograph killer whales from above.

The WIRED iPhone 6 Plus Review: Too Big to Fail, But Not to Bend | WIRED
www.wired.com

Here's the best way to start an iPhone review: Goddamn do I love Android.

This Painstaking Recreation of Star Trek Redefines ‘Obsession’ | Underwi...
www.wired.com

If Vic Mignogna bears a passing resemblance to James Tiberius Kirk, there's a reason for it: he's executive-producing (and directing, and st

Book Announcement: Getting Started with Trinket
21stdigitalhome.blogspot.com

Now you may officially know why I have not posted much in the last few months. From September through December, I was writing tutorials on h

宮崎吾朗監督:テレビアニメ初挑戦 ジブリと親元から離れCG作品を制作
mantan-web.jp

スタジオジブリの劇場版アニメ「ゲド戦記」「コクリコ坂から」の宮崎吾朗監督が2014年秋にNHK・BSプレミアムでスタートするアニメ「山賊のむすめローニャ」の監督を務めることが31日、明らかになった。宮崎監督がテレビアニメを手がけるのは初めてで、3DCG制作会社のポリゴン・ピクチュ

Introduction to C language bitwise operators: " _BV " Macro (...cont)
dubworks.blogspot.com

/* The _BV() is a compiler macro defined as #define _BV( bit ) ( 1<<(bit) ) in which was included already indirectly through . It stands for

Teen Launches Hello Kitty into Space
blog.makezine.com

Thirteen-year-old Lauren Rojas' science fair project has taken off in ways she never imagined. The seventh grader at Cornerstone Christian S

GeoGuessr - Let's explore the world!
www.geoguessr.com

GeoGuessr is a geography game which takes you on a journey around the world and challenges your ability to recognize your surroundings.

Arduino Helper Functions
blog.makezine.com

Sometimes finding the right snippet of code to use in your Arduino sketch is as simple as reading the Monday Jolt on the MAKE site.

Re-Paper Experiments | WyoLum Blog
wyolum.com

I was lucky enough to get a preview of repaper.org's new Electronic Paper Display (also available here) with a breakout board. It is pretty

Video wall | Raspberry Pi
www.raspberrypi.org

“What's innovative about a video wall?” I hear you cry. “We've all seen them. Big…walls of video. Been done for years.” We've said many time

U.S. Department of State
plus.google.com

Welcome to the official Google+ page for the U.S. Department of State.

David Grayson's blog: Using I²C on the Raspberry Pi
blog.davidegrayson.com

Last night I succeeded in getting my Raspberry Pi to do some basic I²C (also known as I2C, TWI, or SMBus) communication. I had to look aroun