Super Starburst Galaxy Found One Billion Years After the Big Bang

Dec
07
Jingzhe Ma
Jingzhe Ma

We are pleased to welcome Jingzhe Ma as a guest blogger. She is the first author of a paper that is the subject of our latest press release. Jingzhe is a PhD candidate at the University of Florida, working with Prof. Anthony Gonzalez and Prof. Jian Ge. She is going to defend her PhD dissertation next summer. She has been working on the formation and evolution of high-redshift dusty galaxies through multi-wavelength observations. She joined the South Pole Telescope Sub-Millimeter Galaxy (SPT SMG) Collaboration led by Prof. Joaquin Vieira in 2012.

When Prof. Anthony Gonzalez first introduced me to the SPT SMG group, I was fascinated by the sub-millimeter galaxies discovered by the South Pole Telescope, which is located at the geographic South Pole. We call them sub-millimeter galaxies because these galaxies were historically first discovered at sub-millimeter wavelengths (slightly shorter than one millimeter). They are bright at these wavelengths but very faint in the visible wavelengths due to the large amount of dust in these galaxies. Dust plays an important role, by absorbing and scattering the ultraviolet and visible light from newborn stars. The dust gets heated and re-radiates light in the infrared. I was interested in further studying these objects not only because these galaxies are forming stars at tremendous rates and have revolutionized our understanding of galaxy evolution, but also because these galaxies are magnified by massive foreground galaxies, which act as a gravitational lens. “Wearing” a gravitational lens, we are able to see better.

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Women in the High Energy Universe: Karla Guardado

Nov
22
Karla Guardado
Karla Guardado

Karla Guardado is an astrophysicist technical assistant at the Smithsonian Astrophysical Observatory. She studied physics at MIT and wrote her thesis on “Preheating in New Higgs Inflation.”

I wanted to go into a career in astrophysics because I fell in love with space--its marvels and secrets. As I learned increasingly about physics in school, I became more and more inquisitive. It seemed like the more I thought I knew, I realized that there were actually so many more questions to be answered. I always had an affinity with science, but it was the desire to discover these unanswered questions about space that led me to a career in astrophysics.

I became interested in science at a very young age. I was always very inquisitive, but it wasn't until I began putting the scientific method to use that I understood what science could achieve. I loved every part of my science projects, the investigation, experimentation, and drawing conclusions. That was how I began to think of science as a future career.

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Cygnus X-3 and Its Little Friend

Nov
21
Michael McCollough
Michael McCollough

We are pleased to welcome Dr. Michael McCollough as our guest blogger. Dr. McCollough is the first author of a paper that is the subject of our latest press release. He has spent the last 30 years working with and analyzing data from astronomical radio, optical, X-ray, and gamma-ray telescopes. Currently, he serves as an Archival Astrophysicist at the Chandra X-ray Center in Cambridge, Mass.

Throughout my career I have been a multi-wavelength astronomer. To fully understand astronomical objects, one must look across the electromagnetic spectrum (from radio waves to gamma-rays). Also throughout my career I have been doing spacecraft operations. Starting with NASA’s Hubble Space Telescope (before, during, and after launch), ROSAT, NASA’s Compton Gamma-Ray Observations with the Burst and Transient Source Experiment (BATSE), and currently with NASA’s Chandra X-Ray Observatory. It was when I was working with BATSE that I was introduced to Cygnus X-3. Discovering that high-energy X-rays (as seen by BATSE) were correlated with emissions in the radio.

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Starvation Diet for Black Hole Dims Brilliant Galaxy

Nov
09

Markarian 1018
Astronomers may have solved the mystery of the peculiar volatile behavior of a supermassive black hole at the center of a galaxy. Combined data from NASA's Chandra X-ray Observatory and other observatories suggest that the black hole is no longer being fed enough fuel to make its surroundings shine brightly.

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Monster Flares in Otherwise Ordinary Extragalactic X-ray Binaries'

Oct
18
Jimmy Irwin
Jimmy Irwin

We are pleased to welcome Jimmy Irwin as our guest blogger today. Jimmy is the first author of a new Nature paper describing the detection of two mysterious, flaring X-ray sources in Chandra data. Irwin is an associate professor at the University of Alabama. After obtaining his PhD from the University of Virginia, he was a postdoc, a Chandra Fellow, and a research scientist at the University of Michigan. He studies the X-ray binary and hot gas content of galaxies, as well as the hot intracluster medium of groups and clusters of galaxies.

Projects don't always turn out the way one expects them to. Sometimes the result is uninteresting, but other times they far exceed expectations. Our project began as an undergraduate endeavor for two students looking to work on a project for college credit. A third student, who was a friend of one of the students, joined the project just for fun.

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Discovering the Treasures in Chandra's Archives

Oct
14

Archives
Each year, NASA's Chandra X-ray Observatory helps celebrate American Archive Month by releasing a collection of images using X-ray data in its archive.

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X-ray Telescopes Find Evidence for Wandering Black Hole

Oct
04

XJ1417+52
Astronomers have used NASA's Chandra X-ray Observatory and ESA's XMM-Newton X-ray observatory to discover an extremely luminous, variable X-ray source located outside the center of its parent galaxy. This peculiar object could be a wandering black hole that came from a small galaxy falling into a larger one.

Astronomers think that supermassive black holes, with some 100,000 to 10 billion times the Sun's mass, are in the centers of most galaxies. There is also evidence for the existence of so-called intermediate mass black holes, which have lower masses ranging between about 100 and 100,000 times that of the Sun.

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2016: The Year of the Black Hole (1)

Oct
03

The 2016 Nobel Prize in physics will be announced in only 4 days, on Tuesday October 4th. Ronald Drever, Kip Thorne and Rainer Weiss, three founders of the detection of gravitational waves (2). They have already won multiple awards for this discovery including the Kavli Prize in Astrophysics, the Gruber Cosmology Prize, a Special Breakthrough Prize in Fundamental Physics and the Shaw Prize in Astronomy. (Kudos to those behind the Gruber Cosmology Prize and the Special Breakthrough Prize for explicitly naming the LIGO team in their awards, something the Nobel Prize award likely won’t do.)

2016 Laureate Astro Group
Ronald Drever, Kip Thorne and Rainer Weiss (left to right). Credit: The Kavli Foundation.
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Chandra Detects the First X-rays Coming From Our Kuiper Belt

Sep
14
Lisse and McNutt
Carey Lisse (left) and Ralph McNutt Jr. (right)

We are pleased to welcome a pair of distinguished guests to the Chandra blog. Carey Lisse is currently a principal staff scientist at Johns Hopkins University Applied Physics Laboratory (JHU-APL). He has used ACE, Chandra, EUVE, HST, ROSAT, Spitzer, and XMM-Newton as well as numerous ground based telescopes to study the physical properties of many Solar System objects. Ralph McNutt Jr. is a physicist also at JHU-APL. Among his many other positions, he serves as the co-investigator for the PEPSSI instrument aboard New Horizons. He also been the principal investigator on many other spacecraft and experiments designed to explore the Solar System and beyond. Lisse and McNutt are the 1st and 2nd authors of a paper that is the basis for our latest press release, about the surprising Chandra detection of Pluto.

Once the stuff of science fiction when we were kids, the fantastically successful NASA New Horizons mission's flyby of Pluto in July 2015 has transformed our understanding of Pluto from a point-like object into a fascinating world. It has also inspired a plethora of new observations of the system to take advantage of the once-in-a-lifetime flyby event. We ran one of these sets of observations using NASA's Chandra X-ray Observatory. Launched in 1999, Chandra is now one of the established premier observatories of our time - in fact it is one of NASA's four Great Observatories (along with the Hubble Space Telescope, Spitzer Space Telescope, and the Compton Gamma Ray Observatory ).

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X-ray Detection Sheds New Light on Pluto

Sep
14

Pluto
The first detection of Pluto in X-rays has been made using NASA's Chandra X-ray Observatory in conjunction with observations from NASA's New Horizon spacecraft. As reported in our press release this result offers new insight into the environment surrounding the largest and best-known object in the solar system's outermost regions.

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