APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Comments and questions about the APOD on the main view screen.
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APOD Robot
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APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by APOD Robot » Sun Sep 30, 2018 4:10 am

Image The Lonely Neutron Star in Supernova Remnant E0102-72.3

Explanation: Why is this neutron star off-center? Recently a lone neutron star has been found within the debris left over from an old supernova explosion. The "lonely neutron star" in question is the blue dot at the center of the red nebula near the bottom left of E0102-72.3. In the featured image composite, blue represents X-ray light captured by NASA's Chandra Observatory, while red and green represent optical light captured by ESO's Very Large Telescope in Chile and NASA's Hubble Space Telescope in orbit. The displaced position of this neutron star is unexpected since the dense star is thought to be the core of the star that exploded in the supernova and created the outer nebula. It could be that the neutron star in E0102 was pushed away from the nebula's center by the supernova itself, but then it seems odd that the smaller red ring remains centered on the neutron star. Alternatively, the outer nebula could have been expelled during a different scenario -- perhaps even involving another star. Future observations of the nebulas and neutron star appear likely to resolve the situation.

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Boomer12k
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Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by Boomer12k » Sun Sep 30, 2018 5:25 am

A colorful cosmic puzzle...

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DL MARTIN

Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by DL MARTIN » Sun Sep 30, 2018 7:37 am

Perhaps the neutron star is off center because we are not looking directly at the end of the cylinder.

Raymond Kenneth Petry

Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by Raymond Kenneth Petry » Sun Sep 30, 2018 8:44 am

How fast, is, it moving... How fast was, it moving... Compute...

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Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by De58te » Sun Sep 30, 2018 2:26 pm

Raymond Kenneth Petry wrote:
Sun Sep 30, 2018 8:44 am
How fast, is, it moving... How fast was, it moving... Compute...
According to the first link from Cornell Library, fragments from the supernova explosion were traveling at a few 1,000 km/s. The optical ring is expanding at 90.5 km/s plus or minus 40.

Ace_GCR

Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by Ace_GCR » Sun Sep 30, 2018 6:14 pm

Seems to me that if the surviving neutron star was part of a binary/multiple system, when the companion committed cosmic suicide, the survivor would have been flung (sorry for the overly technical term) tangentally from the system. The way to tell would be to watch the path of the survivor. If it's an expanding spiral path, it's an old companion (still loosely tied to the old gravity epicenter). If it's linear, parbolic or hyperbolic, it's a passer-by .

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bystander
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Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by bystander » Sun Sep 30, 2018 9:39 pm

Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by Fred the Cat » Sun Sep 30, 2018 9:44 pm

This space diorama is obviously telling us that " Q" is the key factor in explaining the offset. :wink:
Freddy's Felicity "Only ascertain as a cat box survivor"

barliman

Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by barliman » Mon Oct 01, 2018 2:53 am

With image blown up large as my screen background, I see a face in the image: the blue neutron star is his right eye, the bright red star to the side his left eye, and green streaks defining his mouth and right cheek. The dark space inside the blue halo look like an afro. :)

geo

Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by geo » Tue Oct 02, 2018 8:53 pm

The ring is tilted, closer at the top, farther away at the bottom. Therefore it appears unequal. The red ring is not so expanded as to appear un-centered.

DavidGZamora

Re: APOD: The Lonely Neutron Star in Supernova... (2018 Sep 30)

Post by DavidGZamora » Sat Oct 27, 2018 1:19 am

LOOK ! at the FACE in this Super Nova remnent :a red eye, a blue eye, a lit tip of the nose & a mouth shaded in green !!! Amazing !