Binary Radio Pulsar Search (Arecibo) "BRP4" - new data!

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,938
Credit: 200,093,124
RAC: 45,739
Topic 197042

We (finally!) received new data from Arecibo, about 350 beams so far. These are "inner galaxy" beams from April 2013 that (AFAIK) no other PALFA pipeline has looked at so far. It's rather likely that there are some unknown pulsars in there that could be discovered by Einstein@Home. We decided to send out this data first, before finishing the remaining ~300 "outer galaxy" beams of the old data set. So if you're in for a pulsar discovery hunt, now is the time to point your CPUs to Einstein@Home and run the "BRP4" App!

BM

BM

Mike Hewson
Mike Hewson
Moderator
Joined: 1 Dec 05
Posts: 6,125
Credit: 126,921,764
RAC: 14,438

Binary Radio Pulsar Search (Arecibo) "BRP4" - new data!

Aha! The trumpet is sounded, and the foxes are loose. Release the hounds! :-)

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

Logforme
Logforme
Joined: 13 Aug 10
Posts: 332
Credit: 1,714,373,961
RAC: 7,181

Woof Woof

Woof Woof

Mike Hewson
Mike Hewson
Moderator
Joined: 1 Dec 05
Posts: 6,125
Credit: 126,921,764
RAC: 14,438

RE: Woof Woof Yep. The

Quote:
Woof Woof


Yep. The inner galaxy vs. outer galaxy expected densities are several orders of magnitude different. Is there a ballpark figure ( ratio ) on that, Bernd ?

Cheers, Mike.

( edit ) For that matter, ought we punt this message out via BOINC and/or front-page it ?

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,938
Credit: 200,093,124
RAC: 45,739

RE: Is there a ballpark

Quote:
Is there a ballpark figure ( ratio ) on that, Bernd

That's a question for Benjamin. I notified him.

BM

BM

Aaron Dodds
Aaron Dodds
Joined: 1 Feb 13
Posts: 8
Credit: 2,102,404
RAC: 0

Does this data run on gpu

Does this data run on gpu aswell or just cpu

Benjamin Knispel
Benjamin Knispel
Joined: 1 Jun 06
Posts: 133
Credit: 4,974,142
RAC: 0

RE: That's a question for

Quote:
That's a question for Benjamin. I notified him.

You called? ;-)

This plot, which I took from the PALFA webpage might give you an idea.

The plot shows a schematic of our Galaxy from above, the Sun is at the thick circle with a dot at the center in the top half (below the words "Orion-Cygnus"). Red dots are all known pulsars, blue dots are the pulsars found by the PALFA survey.

Arecibo on the Earth (at the position of the Sun in this scale) can basically see two wedges. One going to the bottom right, between 35 and 75 degrees in the angle scale centered on the Sun's position. This is the "inner Galaxy" direction. The blue dota are all pulsars discovered in PALFA data (not necessarily by Einstein@Home, though).

The other wedge is going to the top, between 170 and 210 degrees on the Sun-centered angle scale. You can easily see that are much fewer pulsar looking to the outer Galaxy just because the Sun is not at the center of the Galaxy and there are less stars looking outwards.

In total there are 113 PALFA discoveries in this plot, only 5 of which are in the outer Galaxy region. The outer Galaxy to inner Galaxy discovery ratio thus is 5:108, or approximately 1:22.

Cheers,
Benjamin

 

Einstein@Home Project

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,938
Credit: 200,093,124
RAC: 45,739

RE: The outer Galaxy to

Quote:
The outer Galaxy to inner Galaxy discovery ratio thus is 5:108, or approximately 1:22

... which is surprisingly consistent with my very vague remembrance (1:20) I uttered a week ago.

Thanks, Ben!

BM

BM

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,938
Credit: 200,093,124
RAC: 45,739

RE: Does this data run on

Quote:
Does this data run on gpu aswell or just cpu

On GPUs these tasks run way too short (down to a minute), this would stress our servers as well as e.g. your download rate too much. No, CPU only.

BM

BM

Aaron Dodds
Aaron Dodds
Joined: 1 Feb 13
Posts: 8
Credit: 2,102,404
RAC: 0

also is there a way to only

also is there a way to only run these tasks.

in my settings i have these:

Binary Radio Pulsar Search (Arecibo)
Binary Radio Pulsar Search (Perseus Arm Survey)
Gravitational Wave S6 LineVeto search (extended)
Gamma-ray pulsar search #2

which one do i keep on to do BRP4 new data only

Bernd Machenschalk
Bernd Machenschalk
Moderator
Administrator
Joined: 15 Oct 04
Posts: 3,938
Credit: 200,093,124
RAC: 45,739

RE: which one do i keep on

Quote:
which one do i keep on to do BRP4 new data only

See thread title?

BM

BM

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.