Skip to comments.
Scientists Just Detected a Colossal Gamma-Ray Burst, And It's a Record-Breaker
.sciencealert.com ^
| 12 October 2022 By
| MICHELLE STARR
Posted on 10/12/2022 7:35:55 AM PDT by BenLurkin
Initially dubbed Swift J1913.1+1946...now re-named GRB221009A.
2.4 billion light-years away...18 teraelectronvolts.
[T]hough this proximity happens to be 20 times closer than the average long gamma-ray burst, it poses absolutely no danger to life on Earth.
Rather, it's tremendously exciting – an event that could
These bursts mark the end of the life of a massive star – a supernova or hypernova. They can also emerge from a collision between two neutron stars.
Different gamma-ray burst profiles mean different kinds of explosions, which fade in different ways. When astronomers observed a collision between two neutron stars in 2017, it produced a short gamma-ray burst. Long-duration bursts are associated with unusually powerful events, superluminous supernovae and hypernovae.
It's unclear, yet, what we're looking at with GRB221009A.
What we do know is that the burst appears to have emerged from a very dusty galaxy, and that it was very powerful. And the Large High Altitude Air Shower Observatory (LHAASO), a Cherenkov observatory in China, has detected photons with energies up to roughly 18 teraelectronvolts (TeV). To date, just a handful of gamma-ray bursts have been detected with emission in the TeV range; if the LHAASO data is verified, GRB221009A will be the first above 10 TeV.
There is, for now, a lot of science to be done in the days following the outburst. Scientists are training telescopes to the location of the object to observe the behavior of the afterglow across as many wavelengths as possible, information crucial to uncovering in detail the cause of the explosion.
(Excerpt) Read more at sciencealert.com ...
TOPICS: Astronomy; Science
KEYWORDS: astronomy; carringtonevent; catastrophism; cme; coronalmassejection; gammaray; gammarayburst; grb221009a; science; sida; supernova; swiftj1913pt1pl1946
Navigation: use the links below to view more comments.
first 1-20, 21-22 next last
1
posted on
10/12/2022 7:35:55 AM PDT
by
BenLurkin
To: BenLurkin
Probably the birth of a new Marvel/Disney transvestite “super hero”.
2
posted on
10/12/2022 7:39:23 AM PDT
by
FlingWingFlyer
(Let's Go Brandon! FJB.)
To: BenLurkin; SunkenCiv; MtnClimber
3
posted on
10/12/2022 7:39:24 AM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: BenLurkin
4
posted on
10/12/2022 7:42:23 AM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: BenLurkin
First you go blind, and then you fry.
5
posted on
10/12/2022 7:43:58 AM PDT
by
Sirius Lee
(They intend to murder us. Prep if you want to live and live like you are prepping for eternal life)
To: BenLurkin
Gamma ray burst detector pegged...
6
posted on
10/12/2022 7:46:24 AM PDT
by
Magnum44
(...against all enemies, foreign and domestic... )
To: Red Badger; 75thOVI; Abathar; agrace; aimhigh; Alice in Wonderland; AnalogReigns; AndrewC; ...
7
posted on
10/12/2022 7:49:44 AM PDT
by
SunkenCiv
(Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
To: Sirius Lee
A gamma ray burst close enough to our system would sterilize our planet of all life. Sleep well!
To: BenLurkin
9
posted on
10/12/2022 7:57:33 AM PDT
by
Abathar
(Proudly posting without reading the article carefully since 2004)
To: BenLurkin
Hulk alert in 3,2,1......
10
posted on
10/12/2022 8:00:18 AM PDT
by
Billyv
( Ephesians 6:11 for we battle not against flesh and blood...Pray for our leaders and nation )
To: BenLurkin
11
posted on
10/12/2022 8:06:15 AM PDT
by
DannyTN
To: DannyTN
12
posted on
10/12/2022 8:15:09 AM PDT
by
Magnum44
(...against all enemies, foreign and domestic... )
To: DannyTN
You had to do it, didn’t you?
13
posted on
10/12/2022 8:29:10 AM PDT
by
griswold3
(There are no solutions; there are only trade-offs. – Thomas Sowell)
To: griswold3
Had to!
How was that not in the top 10 posts?
14
posted on
10/12/2022 8:30:14 AM PDT
by
DannyTN
To: DannyTN
15
posted on
10/12/2022 8:34:34 AM PDT
by
griswold3
(There are no solutions; there are only trade-offs. – Thomas Sowell)
To: Abathar
In their long run you’ll get cold soup.
16
posted on
10/12/2022 8:49:46 AM PDT
by
Dust in the Wind
(Drill, Drill, Drill then refine it.)
To: BenLurkin
OMG, OMG, OMG. In 2.4 billion years we’re all going to turn into the Hulk!!!!!
17
posted on
10/12/2022 9:25:48 AM PDT
by
LS
("Castles made of sand, fall in the sea . . . eventually" (Hendrix) )
To: BenLurkin
18
posted on
10/12/2022 9:42:25 AM PDT
by
moovova
To: Abathar
Well that was a cheery little trip into the future . . .
19
posted on
10/12/2022 9:53:30 AM PDT
by
Stosh
To: Stosh
Whole lotta zeros going by down there...
20
posted on
10/12/2022 11:14:53 AM PDT
by
Abathar
(Proudly posting without reading the article carefully since 2004)
Navigation: use the links below to view more comments.
first 1-20, 21-22 next last
Disclaimer:
Opinions posted on Free Republic are those of the individual
posters and do not necessarily represent the opinion of Free Republic or its
management. All materials posted herein are protected by copyright law and the
exemption for fair use of copyrighted works.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson