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New candidate for most distant object in universe
www.physorg.com ^ | 05-25-2011 | Provided by Pennsylvania State University

Posted on 05/25/2011 11:58:54 AM PDT by Red Badger

A gamma-ray burst detected by NASA's Swift satellite in April 2009 has been newly unveiled as a candidate for the most distant object in the universe. At an estimated distance of 13.14 billion light years, the burst lies far beyond any known quasar and could be more distant than any previously known galaxy or gamma-ray burst. Multiple lines of evidence in favor of a record-breaking distance for this burst, known as GRB 090429B for the 29 April 2009 date when it was discovered, are presented in a paper by an international team of astronomers led by former Penn State University graduate student Antonino Cucchiara, now at the University of California, Berkeley. The paper has been accepted for publication in the Astrophysical Journal.

The gigantic burst of gamma rays erupted from an exploding star when the universe was less than 4% of its present age, just 520 million years old, and less than 10% of its present size. "The galaxy hosting the progenitor star of GRB 090429B was truly one of the first galaxies in the universe," said Derek Fox, associate professor of astronomy and astrophysics at Penn State and a co-author of the paper. "Beyond the possible cosmic distance record, GRB 090429B illustrates how gamma-ray bursts can be used to reveal the locations of massive stars in the early universe and to track the processes of early galaxy and star formation that eventually led to the galaxy-rich cosmos we see around us today."

Gamma-ray bursts, the brightest explosions known, occur somewhere within the observable universe at a rate of about two per day. Thanks to their extreme brightness, gamma-ray bursts can be detected by Swift and other satellite observatories even when they occur at distances of billions of light years. While the bursts themselves last for minutes at most, their fading "afterglow" light remains observable from premier astronomical facilities for days to weeks. Detailed studies of the afterglow during this time, when feasible, allow astronomers to measure the distance to the burst.

These afterglow measurements were used to determine a cosmic distance record in 2009 for an earlier gamma-ray burst, GRB 090423 at a distance of 13.04 billion light years from Earth, making it temporarily the "most distant object in the universe." This record was surpassed by galaxy discoveries in 2010 and 2011 that pushed the cosmic frontier out to 13.07 billion light years, and potentially even further. "Our extreme estimate of the distance to GRB 090429B makes this a sort of 'revenge of the bursts,'" said Cucchiara. "A gamma-ray burst is once more contending for the title of most distant object in the cosmos -- beyond the previously known most-distant quasars and galaxies."

Less than a week after the record-setting GRB 090423 made headlines around the world, this new burst, GRB 090429B, appeared in the sky with suspiciously similar properties. As with the previous burst, GRB 090429B was a short-lived event, lasting less than 10 seconds, and automated Swift observations showed it to have a relatively faint X-ray afterglow. Cucchiara, then a graduate student at Penn State, woke up in the early morning hours to direct observations at the Gemini North telescope on Mauna Kea, Hawaii, that he hoped would pin down the nature of this burst. Working with coauthors Andrew Levan of the University of Warwick, Nial Tanvir of the University of Leicester, and thesis supervisor Derek Fox of Penn State, Cucchiara found that, while the afterglow was visible in infrared observations, no optical light could be detected. This "drop out" behavior is a distinctive signature of the most-distant objects, and has been used for initial identification of all of the most-distant quasars, galaxies, and gamma-ray bursts.

Cucchiara requested an immediate spectrum of the GRB 090429B afterglow from the Gemini operators, which would have provided a definitive measurement of the distance to the burst. Unfortunately, just as the spectrum was about to be taken, clouds blew in over the summit of Mauna Kea and hid the afterglow from sight. By the next night, the afterglow was too faint to yield a useful spectrum, and over the following nights it faded from view completely. "It was frustrating to lose sight of this burst, but the hints we had were so exciting there was no chance of us letting it go," said Cucchiara, who presented an initial study of the burst as part of his doctoral thesis at Penn State.

Determined not to let GRB 090429B become "the burst that got away," the team spent two years carrying out a careful examination of their data to see if the burst is truly a candidate record-breaker, or might be a partially-obscured burst in a galaxy at a less dramatic distance. Importantly, this work has meant gathering new data -- deep observations with Gemini and the Hubble Space Telescope that would have revealed a galaxy at the burst position in any of the less-dramatic scenarios. This evidence, including the missing galaxy, indicates that the burst is extremely likely -- a 99.3-percent chance -- to be the most distant cosmic explosion, beyond the record set by GRB 090423. "Like the best politicians or talent-show contestants, the more we examined this burst, the better it looked," says Levan, the paper's second author.

Whether GRB 090429B is now the most distant object in the universe depends on several factors which are not precisely known. First, it must lie beyond the 13.07-billion-light-year distance to a galaxy reported in 2010 by a team of astronomers led by Matthew Lehnert at the Observatoire de Paris. This is very likely to be the case, at 98.9% probability, but is not certain. It also has to lie beyond the distance of a galaxy reported in 2011 by a team of astronomers led by Rychard Bouwens of U.C. Santa Cruz. This could be either easy or hard: The Bouwens team estimates that there is a 20% chance their galaxy is not a record breaker at all, but simply a faint galaxy at a relatively modest distance; on the other hand, if the Bouwens galaxy is a record-breaker, it is very distant indeed, from 13.11 to 13.28 billion light years away, and there is only a 4.8% chance that GRB 090429B is more distant than that. Overall, and treating these uncertainties as perfectly understood, there is a 23% chance that GRB 090429B is now the most distant known object in the Universe, the astronomers said.

With better luck, or more advanced facilities, it should be possible in the future to use the bright afterglows of bursts like GRB 090423 and GRB 090429B to explore the conditions of star and galaxy formation at these early cosmic epochs in detail. "Discovering extremely distant bursts is pretty fun," says Fox, "but we suspect there is a whole lot more information in the bursts, waiting for us, that we have yet to access."


TOPICS: Culture/Society; Miscellaneous; News/Current Events
KEYWORDS: astronomy; astrophysics; haltonarp; space; stringtheory; xplanets

Credit: Gemini Observatory/AURA/NASA/ Levan, Tanvir, Cucchiara, Fox

VIDEO AT LINK...............

1 posted on 05/25/2011 11:58:59 AM PDT by Red Badger
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To: KevinDavis

Ping!...........


2 posted on 05/25/2011 11:59:35 AM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: SunkenCiv

/mark


3 posted on 05/25/2011 12:00:56 PM PDT by KoRn (Department of Homeland Security, Certified - "Right Wing Extremist")
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To: Red Badger
"A gamma-ray burst detected by NASA's Swift satellite in April 2009 has been newly unveiled as a candidate for the most distant object in the universe."

That would be impossible to prove. At best it would be the most distant VISIBLE object in the universe.

4 posted on 05/25/2011 12:01:32 PM PDT by circlecity (')
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To: Red Badger
New candidate for most distant object in universe

What is Barack Obama's connection with reality?

I'll take "Dear Reader" for $1000, Alex.

5 posted on 05/25/2011 12:05:29 PM PDT by kevkrom (Palin's detractors now resort to "nobody believes she can win because nobody believes she can win")
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To: Red Badger

I’m just here to watch the fur fly between the 6k year old crowd and everyone else...


6 posted on 05/25/2011 12:07:19 PM PDT by Abathar (Proudly posting without reading the article carefully since 2004)
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To: Red Badger

I thought this was another birth certificate thread.


7 posted on 05/25/2011 12:07:27 PM PDT by Raycpa
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To: Red Badger

John Edwards’ sense of shame?


8 posted on 05/25/2011 12:08:15 PM PDT by WayneS ("I hope you know this will go down on your PERMANENT record...")
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To: Red Badger

What lies beyond the most distant object in an infinite universe?


9 posted on 05/25/2011 12:10:13 PM PDT by WayneS ("I hope you know this will go down on your PERMANENT record...")
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To: Abathar

If Adam was created a full grown man with speech ability and gardening skills then a universe created “in place” would be a lesser miracle.


10 posted on 05/25/2011 12:11:43 PM PDT by Raycpa
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To: WayneS

What lies beyond the most distant object in an infinite universe?

0bama’s new home (and it’s not heaven).


11 posted on 05/25/2011 12:13:20 PM PDT by grumpygresh (Democrats delenda est)
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To: Red Badger
May I nominate someone for the honor of being the first to explore GRB 099429B? It'll make the world's billions of Muslim scientists feel all warm and fuzzy.

Image and video hosting by TinyPic

12 posted on 05/25/2011 12:13:32 PM PDT by newheart (When does policy become treason?)
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To: Red Badger
Here's a question for the scientists here. If this light comes from a galaxy far, far, away and it is the light from billions of years ago when our universe was supposedly much smaller than it is now, why does it register at such a great distance? Wouldn't the light register as being a much closer source if it was from a time when that galaxy was closer to us?

Also, how can they make statements such as "the universe is still expanding and accelerating when the light they are looking at is billions of years old? The universe could be screaming back at us for all we know since the info we have on these distant galaxies is billions of years old and not very up to date.

13 posted on 05/25/2011 12:16:15 PM PDT by calex59
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To: WayneS
What lies beyond the most distant object in an infinite universe?>
14 posted on 05/25/2011 12:23:44 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: calex59

It has been moving away from us at the same time we have been moving away from it. Like two dots on a deflated balloon move apart as they balloon is inflated...........


15 posted on 05/25/2011 12:26:15 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: calex59
Here's a question for the scientists here. If this light comes from a galaxy far, far, away and it is the light from billions of years ago when our universe was supposedly much smaller than it is now, why does it register at such a great distance? Wouldn't the light register as being a much closer source if it was from a time when that galaxy was closer to us?

Because space itself expanded. Time expanded too. The whole thing's expanding like a bat out of hell. Billions. Trillions. It's like the National Debt.

There. Does that answer your question?

16 posted on 05/25/2011 12:28:47 PM PDT by Steely Tom (Obama goes on long after the thrill of Obama is gone)
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To: Abin Sur
PING to a related and interesting thread.


17 posted on 05/25/2011 12:38:18 PM PDT by UCANSEE2 (Lame and ill-informed post)
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To: WayneS

“What lies beyond the most distant object in an infinite universe?”

I have always been fascinated to wonder what lies beyond the boundary of a FINITE universe.


18 posted on 05/25/2011 12:40:19 PM PDT by swain_forkbeard (Rationality may not be sufficient, but it is necessary.)
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To: Greysard; count-your-change
PING to


19 posted on 05/25/2011 12:42:53 PM PDT by UCANSEE2 (Lame and ill-informed post)
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To: Steely Tom
Does that answer your question?

Nope, because the light is still billions of years old and does not represent what is going on NOW and cannot possibly tell us that the Universe is still expanding and it doesn't answer the question about how light from a closer source(the source being billions of years old)should register as being farther away. If the light started out billions of years ago the distance to it's source should measure much closer because at that time it was much closer, unless the speculation as to the size of the Universe at that time is wrong.

Much of the crap about the Universe is speculation.

20 posted on 05/25/2011 12:45:18 PM PDT by calex59
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To: WayneS
What lies beyond the most distant object in an infinite universe?

Image and video hosting by TinyPic

The button that was pushed to cause the big bang.

21 posted on 05/25/2011 12:45:34 PM PDT by LucyT
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To: UCANSEE2
Beelions and Beelions
22 posted on 05/25/2011 12:45:54 PM PDT by traderrob6
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To: WayneS
What lies beyond the most distant object in an infinite universe?


23 posted on 05/25/2011 12:48:14 PM PDT by UCANSEE2 (Lame and ill-informed post)
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To: Red Badger
It sure as hell better not be an independent candidate, ‘cuz then it's just gonna screw up the whole process
24 posted on 05/25/2011 12:50:20 PM PDT by Hegewisch Dupa
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To: Hegewisch Dupa

Is it a natural born citizen?


25 posted on 05/25/2011 12:52:30 PM PDT by Hunton Peck (See my FR homepage for a list of businesses that support WI Gov. Scott Walker)
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To: WayneS

The face of God.

Or, it could be the outer edges of a petri dish. ;>)

It is fun to wonder and dream.


26 posted on 05/25/2011 12:55:59 PM PDT by Gator113 ("GAME ON." I'll be voting for Sarah Palin, Liberty, our Constitution and American Exceptionalism.)
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To: Hegewisch Dupa

I think it’s Libertarian. It blew up.............


27 posted on 05/25/2011 12:56:35 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: LucyT
It can be either a "reset" or "launch" button, depending on whether you're into cyclical or expanding-universe cosmology.


28 posted on 05/25/2011 12:58:08 PM PDT by Hunton Peck (See my FR homepage for a list of businesses that support WI Gov. Scott Walker)
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To: calex59; Steely Tom

It was that far away 13.14 billion years ago. It ain’t there now. It took the light that long to get here, where we are now. If you could transcend time and space to go where it happened in an instant, there would be nothing at that location OR something that wasn’t there when it happened................


29 posted on 05/25/2011 1:02:16 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: Red Badger

“It took the light that long to get here, where we are now. If you could transcend time and space to go where it happened in an instant, there would be nothing at that location OR something that wasn’t there when it happened...”

Wouldn’t that mess up time travel too? If I got in my machine, and went back a week in time, would I end up where the Earth was a week ago? That’d be a bummer, Dude!


30 posted on 05/25/2011 1:42:57 PM PDT by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
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To: Dr. Bogus Pachysandra

You have to transcend both TIME AND SPACE............else you will end up in a very cold and dark place............................


31 posted on 05/25/2011 1:44:37 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: Hunton Peck; WayneS

32 posted on 05/25/2011 1:46:56 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: Red Badger

That’s what I was thinkin;, Badge!


33 posted on 05/25/2011 1:53:12 PM PDT by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
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To: Dr. Bogus Pachysandra

In space, nobody can hear you scream..........................


34 posted on 05/25/2011 1:55:25 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: Red Badger
New candidate for most distant object in universe

A RINO spine?

35 posted on 05/25/2011 2:02:08 PM PDT by N. Theknow (The MSM is to 0bama what the Broom-n-Scoop Detail is to a circus parade.)
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To: Red Badger

Wrong. The most distant object in the universe is Obama’s ear - if you happen to be a non-Marxist.

Or... sane.


36 posted on 05/25/2011 3:19:02 PM PDT by Jack Hammer
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To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...

Thanks KoRn.
 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

37 posted on 05/25/2011 7:08:15 PM PDT by SunkenCiv (Thanks Cincinna for this link -- http://www.friendsofitamar.org)
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To: KoRn; AdmSmith; bvw; callisto; ckilmer; dandelion; ganeshpuri89; gobucks; KevinDavis; ...

Thanks KoRn.


· List topics · post a topic · subscribe · Google ·

38 posted on 05/25/2011 7:08:19 PM PDT by SunkenCiv (Thanks Cincinna for this link -- http://www.friendsofitamar.org)
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To: Red Badger

When this star exploded the universe was only 10% the size that it is now.

How did the earth get to where it’s at now 13 billion years before this Gamma radiation arrived?


39 posted on 05/26/2011 11:52:38 AM PDT by mowowie
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To: mowowie

When that star exploded, the earth did no exist. The solar system did not exist. The parent star that exploded that eventually gave us the debris that became our sun probably didn’t exist as probably it’s parent star didn’t yet exist, either. 13 billion years it took the gamma ray burst, traveling at the speed of light (which is very slow for such a big universe) to reach the spot where one day a planet full of life would observe it............


40 posted on 05/26/2011 11:58:48 AM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: Red Badger

If i ever make the mistake of driving to Florida again i am bringing around 735 pounds of TNT to blow up all 735 South of the Border signs i pass on the way there.


41 posted on 05/26/2011 11:59:56 AM PDT by mowowie
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To: Red Badger

Yea but doesn’t that mean that the universe expanded far faster than the speed of light?


42 posted on 05/26/2011 12:03:43 PM PDT by mowowie
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To: WayneS

The answer.


43 posted on 05/26/2011 12:20:39 PM PDT by mad_as_he$$ ("Any sufficiently advanced technology is indistinguishable from magic." A. C. Clarke)
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To: calex59

Google red/blue shift.


44 posted on 05/26/2011 12:21:32 PM PDT by mad_as_he$$ ("Any sufficiently advanced technology is indistinguishable from magic." A. C. Clarke)
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To: mowowie

The universe expanded, and with it the fabric of space and time.
The light traveled at a constant speed while the universe was stretching out and time sped up..................

If you ever get the chance, read “Icarus at the Edge of Time” by Brian Greene. It is a short story in picture book form that deals with the effects of Relativity on a hapless young genius.....................

http://www.guardian.co.uk/music/2010/jul/06/icarus-at-the-edge-of-time-review


45 posted on 05/26/2011 12:31:34 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: mowowie

Hey! they kept you from falling asleep at the wheel and running off the road!.....................


46 posted on 05/26/2011 1:16:15 PM PDT by Red Badger (Jesus said there is no marriage in Heaven. That's why they call it Heaven............)
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To: mowowie

I thought most of the SOTB signs came down? Last I knew they only had them in NC and SC these days.


47 posted on 06/27/2011 3:47:13 PM PDT by MikeD (We live in a world where babies are like velveteen rabbits that only become real if they are loved.)
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To: MikeD

The last time i drove south from MA to FL was around 1990.

Maybe somebody else blew ‘em all up.

The “You never sausage a good time” sign is the one i remember the most.


48 posted on 06/27/2011 6:31:14 PM PDT by mowowie
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