by neufer » Fri Feb 21, 2014 6:01 pm
Psnarf wrote:
Is there any other way to explain those radio pulses than a spinning neutron star? I would have thought that the jet streaming off to the right would indicate the axis of rotation. Since the jet traces a spiral pattern, perhaps that was the early axis of rotation that deteriorated into what we now detect? Kind of a spinning top that starts wobbling as the rate of spin slows down.
Or, perhaps, the polar plasma jet ran into something.
http://www.aps.org/units/dfd/pressroom/gallery/2012/lueptow12.cfm wrote:
When a perfectly straight stream of honey hits the surface of the water in a crystal goblet, it begins to spiral. This phenomenon is similar to the coiling effect, called "liquid rope coiling," that occurs when a stream of thick, high-viscosity fluid like honey or syrup traversing through air hits a flat surface like a piece of toast or the bottom of an empty teacup. But in the example depicted
![Arrow :arrow:](./images/smilies/icon_arrow.gif)
, this coiling instability is triggered by a liquid: the stream of honey impinges on the surface of the water instead of at the bottom of the goblet. As a result, the coiling stream of honey is stretched and deformed as it traverses through the water in the goblet.
Psnarf wrote:
Today's APOD is only the
x-ray emmission by Chandra. I'm amazed that radio photons appear from only the center and part of the tail of the pulsar, and that there is no evidence whatsoever that any of this is going on in the visible range... The mind boggles!
Boggle, n. [Scot. and North Eng. bogle, bogill, bugill, specter, hobgoblin. Cf. Bug.]
. A goblin; a specter; a frightful phantom; a bogy; a bugbear.
Boggle, v. i. , 1. To stop or hesitate as if suddenly impeded by unforeseen difficulties.
2. To do anything awkwardly or unskillfully.
3. To play fast and loose; to dissemble.
[float=right][img3="[b][color=#FF0000]Kyle James Lueptow, AAPT High School Physics Photo Contest
A coiling stream of honey in water[/color][/b]"]http://www.aps.org/units/dfd/pressroom/gallery/2012/images/04lueptow2012_1.jpg[/img3][/float][quote="Psnarf"]
Is there any other way to explain those radio pulses than a spinning neutron star? I would have thought that the jet streaming off to the right would indicate the axis of rotation. Since the jet traces a spiral pattern, perhaps that was the early axis of rotation that deteriorated into what we now detect? Kind of a spinning top that starts wobbling as the rate of spin slows down.[/quote]
Or, perhaps, the polar plasma jet ran into something. :arrow:
[quote=" http://www.aps.org/units/dfd/pressroom/gallery/2012/lueptow12.cfm"]
When a perfectly straight stream of honey hits the surface of the water in a crystal goblet, it begins to spiral. This phenomenon is similar to the coiling effect, called "liquid rope coiling," that occurs when a stream of thick, high-viscosity fluid like honey or syrup traversing through air hits a flat surface like a piece of toast or the bottom of an empty teacup. But in the example depicted :arrow: , this coiling instability is triggered by a liquid: the stream of honey impinges on the surface of the water instead of at the bottom of the goblet. As a result, the coiling stream of honey is stretched and deformed as it traverses through the water in the goblet.[/quote][quote="Psnarf"]
Today's APOD is only the [url=http://chandra.harvard.edu/photo/2014/igrj11014/]x-ray emmission by Chandra[/url]. I'm amazed that radio photons appear from only the center and part of the tail of the pulsar, and that there is no evidence whatsoever that any of this is going on in the visible range... The mind boggles![/quote]
Boggle, n. [Scot. and North Eng. bogle, bogill, bugill, specter, hobgoblin. Cf. Bug.]
. A goblin; a specter; a frightful phantom; a bogy; a bugbear.
Boggle, v. i. , 1. To stop or hesitate as if suddenly impeded by unforeseen difficulties.
2. To do anything awkwardly or unskillfully.
3. To play fast and loose; to dissemble.