Nearer to Earth (and thus more recent).

I think that you have it backwards.

Nearer to Earth (and thus more recent).

I think that you have it backwards.

Me too. I have read the article by Saul Perlmutter in Physics Today April 2003.
Tullio

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https://public.nrao.edu/telescopes/radio-frequency-interference
I was reading this article on the NRAO website: https://public.nrao.edu/tele.../radio-frequency-interference
I was looking at the image on the far right which shows what happens when a nearby satellite crosses the path of a star detected by a ground based radio telescope. my question to what I am seeing is, can this truly be considered noise interference emanating from the satellite exclusively or can we be seeing a form of lensing occurring due to the magnetic wave characteristics of the satellite's transmitted radio signals? can we also be seeing background details that where not detectable with just a single radio telescope? Could we be detecting dark matter this way? what are we really seeing? Is it just solely transmissions from the satellite, mixture of Gaussian noise? or something more?

I can still see the radio image of the star yet now its radiation pattern has shifted much like gravitational lensing in optical astronomy.

What I believe is happening is where the far field radio waves are mixing or Fresnel led by the near field waves to create a detectable image. sort of like looking at a small image through a magnifying glass where now you could see things that you could not see before.

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https://public.nrao.edu/telescopes/radio-frequency-interference
I was reading this article on the NRAO website: https://public.nrao.edu/tele.../radio-frequency-interference
I was looking at the image on the far right which shows what happens when a nearby satellite crosses the path of a star detected by a ground based radio telescope. my question to what I am seeing is, can this truly be considered noise interference emanating from the satellite exclusively or can we be seeing a form of lensing occurring due to the magnetic wave characteristics of the satellite's transmitted radio signals? can we also be seeing background details that where not detectable with just a single radio telescope? Could we be detecting dark matter this way? what are we really seeing? Is it just solely transmissions from the satellite, mixture of Gaussian noise? or something more?

I can still see the radio image of the star yet now its radiation pattern has shifted much like gravitational lensing in optical astronomy.

What I believe is happening is where the far field radio waves are mixing or Fresnel led by the near field waves to create a detectable image. sort of like looking at a small image through a magnifying glass where now you could see things that you could not see before.

Welcome David to the SETI Forums!

Edit to make link clickable

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https://public.nrao.edu/telescopes/radio-frequency-interference
I was reading this article on the NRAO website: https://public.nrao.edu/tele.../radio-frequency-interference
I was looking at the image on the far right which shows what happens when a nearby satellite crosses the path of a star detected by a ground based radio telescope. my question to what I am seeing is, can this truly be considered noise interference emanating from the satellite exclusively or can we be seeing a form of lensing occurring due to the magnetic wave characteristics of the satellite's transmitted radio signals? can we also be seeing background details that where not detectable with just a single radio telescope? Could we be detecting dark matter this way? what are we really seeing? Is it just solely transmissions from the satellite, mixture of Gaussian noise? or something more?

I can still see the radio image of the star yet now its radiation pattern has shifted much like gravitational lensing in optical astronomy.

What I believe is happening is where the far field radio waves are mixing or Fresnel led by the near field waves to create a detectable image. sort of like looking at a small image through a magnifying glass where now you could see things that you could not see before.

Welcome David to the SETI Forums!

Edit to make link clickable

It's your SETI Birthday too!!!! Hi David :)

Nearer to Earth (and thus more recent).

I think that you have it backwards.

Me too. I have read the article by Saul Perlmutter in Physics Today April 2003.
Tullio

We see distant galaxies as they were billions of years ago (when Hubble's constant was small) and we see near galaxies as they were recently (when Hubble's constant is big). I'm not talking about which one moves faster, but which one has a bigger Hubble's constant.

Putting this link here..

http://www.huffingtonpost.com/2014/06/18/universe-expansion-measured-precisions_n_5507942.html

Universe's Expansion Calculated With Unprecedented Precision

Scientists studying more than 140,000 extremely bright galaxies have calculated the expansion of the universe with unprecedented accuracy.

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Putting this link here..

http://www.huffingtonpost.com/2014/06/18/universe-expansion-measured-precisions_n_5507942.html

Universe's Expansion Calculated With Unprecedented Precision

Scientists studying more than 140,000 extremely bright galaxies have calculated the expansion of the universe with unprecedented accuracy.

Just read a similar article!! Thanx for putting it here Lynn:)

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rOZZ
Music
Pictures

Nice Pic, Chris!

X-Ray Signal

A mysterious X-ray signal has been found in a detailed study of galaxy clusters using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. One intriguing possibility is that the X-rays are produced by the decay of sterile neutrinos, a type of particle that has been proposed as a candidate for dark matter.

http://www.nasa.gov/chandra/news/mysterious-xray-signal.html#.U6oCwLEa3z8

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Second try is nice :)

Please watch the video :)

This Mysterious Signal 'Could Not Be Explained By Known Physics,' Astronomers Say

When astronomers detected a strange signal in a massive galaxy cluster millions of light years from Earth, they knew they had stumbled upon something big.

"I couldn't believe my eyes," Esra Bulbul, of the Harvard Center for Astrophysics, said in a written statement. "What we found, at first glance, could not be explained by known physics."

http://www.huffingtonpost.com/2014/07/28/mystery-perseus-cluster-video_n_5627104.html

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interesting thanks Lynn . There slowly figuring out what dark matter mite be and getting evidence nut boy is it painfully slow :)
The video was from nasa

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... These pseudo tech mags like the Huff and the Register earn their living by sensationalising every story like the downmarket tabloid press. Beats me why people read them.

For The Register, if you do know a little about the subject, their irreverence can be hilariously good fun. Often, the comments are better than the articles! The only negative is that I read the articles from the editor(?) Lewis Page[*] on my own assumption that he has been blatantly paid off by the Fossil Fuel's industry. All cleverly done in that he puts forward their FUD but in such an outlandish guffaw that no sane reader with more than one neuron could possibly believe it.

If you are interested by one of the articles, you then go off to the deadpan source material to get the real detail.

Also: Beer can help ;-)


Keep searchin',
Martin

[*] He gained some redemption in my contempt for the one example for the way he was able to so authoritatively leave John Humphreys(?) stammering on air on BBC Radio 4 with no option but to try to defend the government over the farce of our UK aircraft carriers! Speechless and priceless!! (BBC Radio4 Today program 10/05/2012)

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See new freedom: Mageia Linux
Take a look for yourself: Linux Format
The Future is what We all make IT (GPLv3)

On theregister.co.uk LOHAN stands for Low Orbit Helium Assisted Navigator. Any reference to an actress called Lindsay Lohan is purely casual.
Tullio

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In some of the recent programming about what may be the end of the universe they fail to mention dark matter and dark energy. What happens to them when that last super massive black hole goes poof?

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

In some of the recent programming about what may be the end of the universe they fail to mention dark matter and dark energy. What happens to them when that last super massive black hole goes poof?

Found an interesting read on the matter:)


http://hubblesite.org/hubble_discoveries/dark_energy/de-fate_of_the_universe.php

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rOZZ
Music
Pictures

In some of the recent programming about what may be the end of the universe they fail to mention dark matter and dark energy. What happens to them when that last super massive black hole goes poof?

Found an interesting read on the matter:)


http://hubblesite.org/hubble_discoveries/dark_energy/de-fate_of_the_universe.php

Thanks Julie :) Big rip eh? ... .... um..... ...... Why not! :)

From Space.com: Could Mystery Signal be First Detection of Dark Matter?

Through the analysis of light from distant galactic clusters, astronomers have detected a mysterious signal that they’re having a hard time explaining. Although the signal is weak, could it be the much sought-after direct evidence for dark matter?

Dark matter pervades the entire universe and makes up for the bulk of its mass, but what is it? We know it’s out there and oodles of indirect evidence for its presence, but seeing a direct signal has so far proven elusive.

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From Space.com: Could Mystery Signal be First Detection of Dark Matter?

Through the analysis of light from distant galactic clusters, astronomers have detected a mysterious signal that they’re having a hard time explaining. Although the signal is weak, could it be the much sought-after direct evidence for dark matter?

Dark matter pervades the entire universe and makes up for the bulk of its mass, but what is it? We know it’s out there and oodles of indirect evidence for its presence, but seeing a direct signal has so far proven elusive.

Thanks for the update, Dr Who Fan :)

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From Space.com: Could Mystery Signal be First Detection of Dark Matter?

Through the analysis of light from distant galactic clusters, astronomers have detected a mysterious signal that they’re having a hard time explaining. Although the signal is weak, could it be the much sought-after direct evidence for dark matter?

Dark matter pervades the entire universe and makes up for the bulk of its mass, but what is it? We know it’s out there and oodles of indirect evidence for its presence, but seeing a direct signal has so far proven elusive.

Thanks for the update, Dr Who Fan :)

+1 :)

Dark matter pervades the entire universe and makes up for the bulk of its mass,

If so lets send a probe and bring some of it back.