Pulsar that switches between Radio & X-Rays has scientists baffled

http://www.astronomy.com/~/link.aspx...b-6f6c72ae6049

"Scientists have found that this object, whose radio emission is known
to switch on and off periodically, exhibits the same behavior, but in
reverse, when observed at X-ray wavelengths.

New observations of a highly variable pulsar using the European Space
Agency’s (ESA) XMM-Newton are perplexing astronomers. Monitoring this
pulsar simultaneously in X-rays and radio waves, astronomers have
revealed that this source, whose radio emission is known to switch on
and off periodically, exhibits the same behavior, but in reverse, when
observed at X-ray wavelengths. It is the first time that a switching
X-ray emission has been detected from a pulsar, and the properties of
this emission are unexpectedly puzzling. As no current model is able to
explain this switching behavior, which occurs within only a few seconds,
these observations have reopened the debate about the physical
mechanisms powering the emission from pulsars."

On Jan 26, 1:04*pm, Yousuf Khan wrote:
http://www.astronomy.com/~/link.aspx...4a7c-b34b-6f6c....

"Scientists have found that this object, whose radio emission is known
to switch on and off periodically, exhibits the same behavior, but in
reverse, when observed at X-ray wavelengths.

New observations of a highly variable pulsar using the European Space
Agency s (ESA) XMM-Newton are perplexing astronomers. Monitoring this
pulsar simultaneously in X-rays and radio waves, astronomers have
revealed that this source, whose radio emission is known to switch on
and off periodically, exhibits the same behavior, but in reverse, when
observed at X-ray wavelengths. It is the first time that a switching
X-ray emission has been detected from a pulsar, and the properties of
this emission are unexpectedly puzzling. As no current model is able to
explain this switching behavior, which occurs within only a few seconds,
these observations have reopened the debate about the physical
mechanisms powering the emission from pulsars."

I do not think they switch,but can see them overlapping. O ya TreBert

On 1/27/13 9:32 AM, G=EMC^2 wrote:
On Jan 26, 1:04 pm, Yousuf Khan wrote:
http://www.astronomy.com/~/link.aspx...4a7c-b34b-6f6c...

"Scientists have found that this object, whose radio emission is known
to switch on and off periodically, exhibits the same behavior, but in
reverse, when observed at X-ray wavelengths.

New observations of a highly variable pulsar using the European Space
Agency s (ESA) XMM-Newton are perplexing astronomers. Monitoring this
pulsar simultaneously in X-rays and radio waves, astronomers have
revealed that this source, whose radio emission is known to switch on
and off periodically, exhibits the same behavior, but in reverse, when
observed at X-ray wavelengths. It is the first time that a switching
X-ray emission has been detected from a pulsar, and the properties of
this emission are unexpectedly puzzling. As no current model is able to
explain this switching behavior, which occurs within only a few seconds,
these observations have reopened the debate about the physical
mechanisms powering the emission from pulsars."

I do not think they switch,but can see them overlapping. O ya TreBert


“Many pulsars have a rather erratic behavior: In the space of a few
seconds, their emission becomes weaker or even disappears for a while,
just to go back to the previous level after some hours,” said Hermsen.
“We do not know what causes such a switch, but the fact that the pulsar
keeps memory of its previous state and goes back to it suggests that it
must be something fundamental.”

On 27/01/2013 10:32 AM, G=EMC^2 wrote:
I do not think they switch,but can see them overlapping. O ya TreBert

No, the article specifically mentions that they switch from X-rays to
Radio and vice-versa. They observed with both X-ray and Radio
telescopes, and timed them to precision. When it's in X-ray mode, it's
not emitting Radio, and when in Radio, it's not emitting X-rays.

Yousuf Khan

"Yousuf Khan"

No, the article specifically mentions that they switch from X-rays to
Radio and vice-versa. They observed with both X-ray and Radio telescopes,
and timed them to precision. When it's in X-ray mode, it's not emitting
Radio, and when in Radio, it's not emitting X-rays.

Finally we've found intelligent life in our Universe!
Please call SETI to understand what they're saying...
:-)

Luigi Caselli

On 29/01/2013 9:54 AM, Luigi Caselli wrote:
"Yousuf

No, the article specifically mentions that they switch from X-rays to
Radio and vice-versa. They observed with both X-ray and Radio telescopes,
and timed them to precision. When it's in X-ray mode, it's not emitting
Radio, and when in Radio, it's not emitting X-rays.

Finally we've found intelligent life in our Universe!
Please call SETI to understand what they're saying...
:-)

We probably need the aliens to explain this to us.

Dear Yousuf Khan:

On Tuesday, January 29, 2013 12:02:25 PM UTC-7, Yousuf Khan wrote:
On 29/01/2013 9:54 AM, Luigi Caselli wrote:
....
Finally we've found intelligent life in our Universe!
Please call SETI to understand what they're saying...
:-)

We probably need the aliens to explain this to us.

I guess that the X-rays are particles falling in, and the radio waves come from the stuff blown outwards (temporarily) by the X-ray bombardment.

David A. Smith

On Jan 27, 10:32*am, "G=EMC^2" wrote:
On Jan 26, 1:04*pm, Yousuf Khan wrote:









http://www.astronomy.com/~/link.aspx...4a7c-b34b-6f6c....

"Scientists have found that this object, whose radio emission is known
to switch on and off periodically, exhibits the same behavior, but in
reverse, when observed at X-ray wavelengths.

New observations of a highly variable pulsar using the European Space
Agency s (ESA) XMM-Newton are perplexing astronomers. Monitoring this
pulsar simultaneously in X-rays and radio waves, astronomers have
revealed that this source, whose radio emission is known to switch on
and off periodically, exhibits the same behavior, but in reverse, when
observed at X-ray wavelengths. It is the first time that a switching
X-ray emission has been detected from a pulsar, and the properties of
this emission are unexpectedly puzzling. As no current model is able to
explain this switching behavior, which occurs within only a few seconds,
these observations have reopened the debate about the physical
mechanisms powering the emission from pulsars."

I do not think they switch,but can see them overlapping. O ya TreBert

They come out of poles for long photons and equator for short photons.
They have a time laps due to rotation. It fits. TreBert

On 29/01/2013 5:06 PM, G=EMC^2 wrote:
They come out of poles for long photons and equator for short photons.
They have a time laps due to rotation. It fits. TreBert


That explanation doesn't make sense.

Yousuf Khan

"Yousuf Khan" wrote
On 29/01/2013 5:06 PM, G=EMC^2 wrote:
They come out of poles for long photons and equator for short photons.
They have a time laps due to rotation. It fits. TreBert


That explanation doesn't make sense.

Maybe TreBert has some unknown photons photos...
He put photons (longer) on poles and photos (shorter) on equator.
It fits. :-)

Probably he was just a little drunk...

Luigi Caselli