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View Full Version : Science T Pyxidis Finally Blows Again! Possible close Supernova.


Dave Lane
04-20-2011, 09:35 AM
T Pyxidis is located about 3,300 light years away from earth. If, and its only a extremely small slight chance, it goes Supernova 1a it would be as bright as the moon in crescent and visible even in full daylight. Would be the brightest light from space to earth in millions of years.


T Pyxidis Finally Blows Again!


T Pyxidis in outburst on April 15th.

North is up. See before-and-after animation.

Ernesto Guido and Giovanni Sostero

The recurrent nova T Pyxidis, which had its last outburst in December 1966 and has been very overdue for its next, finally began a new flareup on April 14th. By the next day it had brightened to about magnitude 8.4. In 1966–67 it eventually reached 6.5.

Here's a blink animation showing before and after, courtesy Ernesto Guido and Giovanni Sostero in Italy. South is up.

The star is in the dim constellation Pyxis east of Puppis and Canis Major. Pyxis is currently fairly high in the south-southwest right after dark, in good view for observers at north temperate latitudes and points south. The star is at declination –32.

More information. Old but good AAVSO article. Current AAVSO observing campaign page.

As a white dwarf accreting mass from a binary partner, T Pyx is a prime candidate to explode completely as a Type Ia supernova within the next 10 million years. Last year, careless reporting led to a flurry of media buzz that if it blows up soon it could endanger Earth. Not so. At its distance of about 3,000 light-years, T Pyx would shine as brightly as magnitude –9 if it went Type Ia (as bright as a thick crescent Moon), but its radiation wouldn't harm us. The current Wikipedia article on T Pyx explains this story well.


T Pyxidis (T Pyx) is a binary star system in the constellation Pyxis estimated at about 1,000 parsecs (3,300 light-years) from Earth. It contains a sun-like star and a white dwarf. Because of the strong gravity effect of the white dwarf, it draws matter from the other star which causes periodic thermonuclear explosions to occur. T Pyx is a recurrent nova and nova remnant in the constellation Pyxis.

The usual apparent magnitude of this star system is 15.5, but there occurred eruptions with maximal apparent magnitude of about 7.0 in the years 1890, 1902, 1920, 1944, 1966 and 2011[1]. T Pyx had not been brighter than magnitude 14 since the 1966 eruption. It could very well be evolving into a new type system and may not erupt again for hundreds of years.[2] Evidence seems to indicate that T Pyxidis may have increased in mass despite the nova eruptions, and is now close to the Chandrasekhar limit.[3] When a white dwarf reaches this limit it will collapse under its own weight and cause a Type 1a supernova. However, when contacted by Scientific American, Dr Sion said that the term "soon" in the press announcement meant that "At the accretion rate we derived, the white dwarf in T Pyxidis will reach the Chandrasekhar Limit in ten million years."[4] By that time it will have moved far enough away from the solar system to have little effect.

Because of its relatively close distance, some contend that a T Pyxidis supernova could have a significant impact on Earth. The received gamma radiation would equal the total (all spectra) radiation of approximately 1000 solar flares, but a type Ia supernova would have to be closer than 1,000 parsecs (3,300 light-years) to cause significant damage to the ozone layer.[5] The X-radiation that reaches Earth, however, would be less than the X-radiation of a single average solar flare.[5] However, Dr. Sion's calculations were challenged by professor Alex Filippenko who said that Sion had possibly miscalculated the damage that could be caused by a T Pyxidis supernova. He had used data for a far more deadly gamma-ray burst (GRB) exploding 1 kiloparsec from Earth, not a supernova, and T Pyxidis certainly is not expected to produce a GRB.[6] According to another expert, "A supernova would have to be 10 times closer [to Earth] to do the damage described."[6] Mankind survived when the Crab Nebula went off at a distance of about 6500 light-years in the year 1054. If this star were to explode as a type Ia supernova at its estimated distance of 3300 light-years, it would have an apparent magnitude of around -9.3, about as bright as the brightest Iridium (satellite) flares

Dave Lane
04-20-2011, 09:38 AM
Here's the before and after. If it goes supernova it would be wildly brighter.

Edit never mind to big a file.

Here's the URL fairly impressive increase in brightness as it is.

http://i176.photobucket.com/albums/w189/walcom77/T_Pyx_animation_April_15_2011.gif

Sofa King
04-20-2011, 09:40 AM
this is it! Game over man!




http://gamerlimit.com/wp-content/uploads/2009/04/zombieroadsign.jpg

chiefsnorth
04-20-2011, 09:46 AM
Damn climate change!

Donger
04-20-2011, 09:47 AM
Well, technically, it either already went nova or it hasn't.

Saulbadguy
04-20-2011, 09:50 AM
Crazy shit, man.

Donger
04-20-2011, 09:53 AM
Crazy shit, man.

LMAO

blaise
04-20-2011, 09:53 AM
I just saw a picture showing that our sun is like a little dot compared to it.

wazu
04-20-2011, 09:54 AM
So, if it does Supernova, we'll get to see it in the year 5311?

Pants
04-20-2011, 09:59 AM
So, if it does Supernova, we'll get to see it in the year 5311?

Well, it might have already happened, we just don't know yet. There's a 3,300 year time delay in the broadcast.

Rain Man
04-20-2011, 10:01 AM
Damn it. A good friend of mine lives near T Pyxidis. I hope he's okay.

Phobia
04-20-2011, 10:03 AM
Japan is really going to be pissed.

keg in kc
04-20-2011, 10:10 AM
We're all gonna die.

Phobia
04-20-2011, 10:12 AM
My great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, grandson is really paranoid about this.

Dave Lane
04-20-2011, 10:13 AM
Well, technically, it either already went nova or it hasn't.

Well it is in nova stage (visibly) right now. It COULD lead to supernova 1a and if it happened 3,299 years ago we are about to get a treat.

Dave Lane
04-20-2011, 10:13 AM
Or eradicated :)

crazycoffey
04-20-2011, 10:15 AM
Well, technically, it either already went nova or it hasn't.

so which is it?

mikey23545
04-20-2011, 10:18 AM
so which is it?

Stay tuned for further developments.

mikey23545
04-20-2011, 10:20 AM
If I'm not mistaken, won't there also be a high amount of particle radiation associated with a supernova event, even at a distance of 3300 light years?

Sofa King
04-20-2011, 10:22 AM
Stay tuned for further developments.

http://www.waitingforfriday.com/images/e/ea/Waiting-710103.jpg

Pants
04-20-2011, 10:22 AM
If I'm not mistaken, won't there also be a high amount of particle radiation associated with a supernova event, even at a distance of 3300 light years?

We'll be fine. At that distance, only a gamma-ray burst would damage us.

Donger
04-20-2011, 10:24 AM
We'll be fine. At that distance, only a gamma-ray burst would damage us.

That's what they want you to believe, yes.

Speaking of which, what's going on at Fukushima?

Dave Lane
04-20-2011, 10:31 AM
That's what they want you to believe, yes.

Speaking of which, what's going on at Fukushima?

250,000 people are going to die. I guarantee it.

Pitt Gorilla
04-20-2011, 10:49 AM
You guys are a-holes; Rams Fan's dad works near T Pyxidis and could have been hurt.

Inspector
04-20-2011, 10:59 AM
Super Nova's are ok, but I still prefer a souped up Camaro myself.

Saulbadguy
04-20-2011, 11:06 AM
Japan is really going to be pissed.

They are going to sink in the ocean before this affects them.

Saulbadguy
04-20-2011, 11:06 AM
You guys are a-holes; Rams Fan's dad works near T Pyxidis and could have been hurt.

:LOL:

Donger
04-20-2011, 11:07 AM
They are going to sink in the ocean before this affects them.

New Madrid. May. Bank on it.

blaise
04-20-2011, 11:07 AM
T Pyxidis was just about to discover how to make a car run on nothing but water. They got him. God dammit they got him.

Demonpenz
04-20-2011, 12:14 PM
T Pyxidis just brought in robinson tejada to pitch

patteeu
04-20-2011, 12:19 PM
Old news. 3300 years old.

Dave Lane
04-20-2011, 12:20 PM
Listen gang, T Pyxidis just bought a house in Leawood.



Oh shit!

Dave Lane
04-20-2011, 12:20 PM
Old news. 3300 years old.

Is 3300 years to long to call repost on my own post?

Pitt Gorilla
04-20-2011, 12:22 PM
T Pyxidis' new album, The Real T-Pain, is blowing up.

BigMeatballDave
04-20-2011, 12:23 PM
Is 3300 years to long to call repost on my own post?There is no Statute of Limitations on reposting.

Donger
04-20-2011, 12:24 PM
Heh. I didn't notice the name until just now.

Pitt Gorilla
04-20-2011, 12:25 PM
Wasn't Grimlock a T Pyxidis?

Mr. Flopnuts
04-20-2011, 12:25 PM
The Event is coming true. They're coming.............

Pants
04-20-2011, 12:45 PM
The Event is coming true. They're coming.............

You mean the happening is happening?