United BOINC

 
  • Increase font size
  • Default font size
  • Decrease font size
Home Project News

Einstein@Home new search for binary radio pulsars at Arecibo

AddThis Social Bookmark Button

Einstein@home binary radio pulsar searchThe Einstein@Home project has started a new search for binary radio pulsars in data from the Arecibo Observatory in Puerto Rico. This will run in parallel with the existing search for gravitational waves from rapidly-spinning neutron stars.

Einstein@Home, based at the University of Wisconsin-Milwaukee (UWM) and the Albert Einstein Institute (AEI) in Germany, is one of the world’s largest public volunteer distributed computing projects. More than 200,000 people have signed up for the project and donated time on their computers to search gravitational wave data for signals from unknown pulsars.

 

Prof. Bruce Allen, Director of the Einstein@Home project and Director at AEI HannoverProf. Bruce Allen, Director of the Einstein@Home project and Director at AEI Hannover, and Prof. Jim Cordes, of Cornell University and Chair of the Arecibo PALFA Consortium, announced that the Einstein@Home project is beginning to analyze data taken by the PALFA Consortium at the Arecibo Observatory in Puerto Rico. The Arecibo Observatory is the largest single-aperture radio telescope on the planet and is used for studies of pulsars, galaxies, solar system objects, and the Earth’s atmosphere.

Using new methods developed at AEI Hannover, Einstein@Home will search Arecibo radio data to find binary systems consisting of the most extreme objects in the universe: a spinning neutron star orbiting another neutron star or a black hole. Current searches of radio data lose sensitivity for orbital periods shorter than about 50 minutes. But the enormous computational capabilities of the Einstein@Home project (equivalent to tens of thousands of computers) make it possible to detect pulsars in binary systems with orbital periods as short as 11 minutes.

“Discovery of a pulsar orbiting a neutron star or black hole, with a sub-hour orbital period, would provide tremendous opportunities to test General Relativity and to estimate how often such binaries merge,” said Cordes. The mergers of such systems are among the rarest and most spectacular events in the universe. They emit bursts of gravitational waves that current detectors might be able to detect, and they are also thought to emit bursts of gamma rays just before the merged stars collapse to form a black hole.

Arecibo radio telescope in Puerto RicoCordes added: “The Einstein@Home computing resources are a perfect complement to the data management systems at the Cornell Center for Advanced Computing and the other PALFA institutions.”
“While our long-term goal is to detect gravitational waves, in the shorter-term we hope to discover at least a few new radio pulsars per year, which should be a lot of fun for Einstein@Home participants and should also be very interesting for astronomers. We expect that most of the project's participants will be eager to do both types of searches,” said Allen. Einstein@Home participants will automatically receive work for both the radio and gravitational-wave searches.

The large data sets from the Arecibo survey are archived and processed initially at Cornell and other PALFA institutions. For the Einstein@Home project, data are sent to the Albert Einstein Institute in Hannover via high-bandwidth internet links, pre-processed and then distributed to computers around the world. The results are returned to AEI, Cornell, and UWM for further investigation.

Gravitational waves were first predicted by Einstein in 1916 as a consequence of his general theory of relativity, but have not yet been directly detected. For the past four years, Einstein@Home has been searching for gravitational waves in data from the US LIGO detectors.

Radio pulsars, first discovered in the 1960s, are rapidly spinning neutron stars that emit a lighthouse-like beam of radio waves that sweeps past the earth as frequently as 600 times per second. Radio pulsars in short-period binary systems are especially interesting because the effects of general relativity can be very strong. Systems that have already been discovered have been used to verify that Einstein’s predictions about gravitational wave emission are correct to better than 1%.

The discovery of new pulsars in much shorter-period binaries would improve estimates of the rates at which binary star systems form and disappear in our Galaxy, and also provide new targets to search for with gravitational wave detectors.

The Einstein@Home project; http://einstein.phys.uwm.edu/

 

Comments
Add New
+/-
Write comment
Name:
Email:
 
Title:
 
:angry::0:confused::cheer:B):evil::silly::dry::lol::kiss::D:pinch::(:shock:
:X:side::):P:unsure::woohoo::huh::whistle:;):s:!::?::idea::arrow:
 
Please input the anti-spam code that you can read in the image.
Mr. Jamahl Peavey  - Einstein and Binary Precession   |Thu, 27 Aug 2009 17:49:33 +0100
Gravitational Radiation was not the issue that estabished General Relativity as
a better model the Newtonian Mechanics. I believe it was orbital precession.
There are a growing number of binary systems that General Relativity fails to
predict accurate precessions. Why is this never presented as a limitation in
the theory?
Alfred Schrader  - An answer   |Tue, 24 Aug 2010 10:25:31 +0100
General Relativity is more than a Century old. What formula are you using for
Dark Matter ? ... alfredschrader@aol.com
Francesco Mazza  - Dark matter??   |Thu, 12 Jan 2012 21:09:38 +0000
Dear Alfred,
Sorry but I'm rather conviced this project has nothing to do with
dark matter. I doubt that our interest in gravitational waves has much to do
with the dark matter issue. The dark matter issue consists in the fact that we
are currently unable to spot the majority of mass that makes up the universe.
Over here instead we are talking about the waves that moving matter should
create on spacetime.

3.26 Copyright (C) 2008 Compojoom.com / Copyright (C) 2007 Alain Georgette / Copyright (C) 2006 Frantisek Hliva. All rights reserved."

 
  • GPUGRID: News GPUGRID: News Project link 22 Apr 2014 | 1:17 pm Badges for two new papers News link

    GPUGRID: News Dears, we have updated the badges to reflect two recent publications performed with your help: * S. Doerr and G. De Fabritiis, On-the-fly learning and sampling of ligand binding by high-throughput molecular simulations, submitted (2013). and * P. Bisignano, S. Doerr, M. J. Harvey, A. Favia, A. Cavalli and G. De Fabritiis, Kinetic characterization of fragment binding in AmpC β-lactamase by high-throughput molecular simulations, J. Chem. Inf. Model., 2014, 54 (2), pp 362–366. You should be able to see them in your user profile, as usual.

  • GPUGRID: News GPUGRID: News Project link 21 Apr 2014 | 7:09 pm Recommended driver versions are 334.21 or later News link

    GPUGRID: News Hi all, As you may have noticed, we now have a CUDA 6.0 application. This brings with it several benefits over the older 4.2 and 5.5 applications, notably: * Support for Maxwell GPUs * Slightly improved performance * Much lower CPU load The minimum driver required for this app is 334.21, but any later version is OK. In the longer term, our software development will assume CUDA 6. features, and it would be good to have as many of you as possible able to run it. Currently 60% of all the WUs we get back are completed on machines with this driver or later (though many of you have been running the 55 app, because of our server scheduling policy) If you have the opportunity, please do consider upgrading your driver! Don't worry if you can't: the older applications aren't going away. From now on, though, they will get only maintenance updates. Matt

  • PrimeGrid: News PrimeGrid: News Project link 19 Apr 2014 | 7:40 pm New SR5 Mega Prime Found! News link

    PrimeGrid: News On 9 April 2014, 9:13:42 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=104944 by finding the mega prime: 104944*5^1610735-1 The prime is 1,125,861 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 59th overall. This is the largest known base 5 mega prime. 84 k's now remain in the Riesel Base 5 Problem. The discovery was made by Brian Smith (Sherlock Holmes) of Germany using an Intel(R) Core(TM)2 Duo CPU T9800 @ 2.93GHz with 4GB RAM running Microsoft Windows 7 Professional. This computer took about 27 hours and 21 minutes to complete the primality test using LLR. The prime was verified on 9 April 2014 15:47:16 UTC, by Dave Sunderland (DaveSun) of the United States using an Intel(R) Core(TM)2 Quad CPU Q9300 @ 2.50GHz with 4 GB RAM running Microsoft Windows XP Professional. This computer took about 30 hours and 46 minutes to complete the primality test using LLR. For more details, please see the official announcement.

  • SIXTRACK: News SIXTRACK: News Project link 19 Apr 2014 | 12:05 pm WU Submission SUSPENDED 19th April, 2014 News link

    SIXTRACK: News In order to avoid any further errors and waste of your valuable resources I have temporarily stopped WU submission. There are only a few thousand WUs active and when they are cleared I hope we will have new Windows executables. Sadly the Windows executables are now giving wrong results in many cases. I looked at using Homogeneous Redundancy but I would still get wrong results. I thought of removing the Windows executables but they are over 80% of our capacity. In this way I hope in a few days after users and support return from vacation we can safely introduce new Windows executables after tests using the BOINC test facility. Sorry about that but I would rather get it fixed properly as we have lots of new work coming. Thankyou for your patience and support. Eric.

  • WEP-M+2 Project: News WEP-M+2 Project: News Project link 19 Apr 2014 | 11:54 am 12-digit factor of P2203 has now been found by the project... News link

    WEP-M+2 Project: News ...48804 times

  • PrimeGrid: News PrimeGrid: News Project link 18 Apr 2014 | 11:08 pm FMA3 LLR going live on all LLR projects News link

    PrimeGrid: News Early Sunday, April 20th UTC (Saturday afternoon or evening in the western hemisphere) we are going to install the new FMA3 (aka AVX2) version of LLR on the remaining LLR projects. Especially on Intel Haswell CPUs, but to some extent also on Ivy Bridge and Sandy Bridge CPUs, this new app is significantly faster. It also consumes more power, and generates more heat. Please make sure your computer is up to running the new app. In general, expect the highest temperatures with shorter projects (PPSE, SGS, and PPS) while longer projects such as SoB and PSP will run slightly less hot. Information and discussion about the new LLR app can be found in this thread.

  • MilkyWay@Home: News MilkyWay@Home: News Project link 15 Apr 2014 | 5:45 pm Release of MilkyWay Sepearation Modified Fit v1.30 News link

    MilkyWay@Home: News Hi everyone, I have just released a new version of MilkyWay Separation Modified Fit. There were small changes made that only effected the integration area used in our likelihood calculations to be more consistent with previous versions of MilkyWay@home. This is just a minor bookkeeping change so no issues are expected, but as always if any issues come up please post them here. Thank you, Jake W.

  • SETI@home: News SETI@home: News Project link 14 Apr 2014 | 6:48 pm "Science in the City" Video News link

    SETI@home: News A new short video about our project (made by the Exploratorium in San Francisco) is now available. You can view it at the Exploratorium website or on YouTube.

  • PrimeGrid: News PrimeGrid: News Project link 14 Apr 2014 | 5:55 pm Shakespeare's Birthday Challenge 20 April 2014 16:16 UTC News link

    PrimeGrid: News In honour of one of the most famous playwrights and poets in English literature, PrimeGrid is hosting a challenge from 20 April 2014 16:16 UTC until 23 April 2014 16:16 UTC on the Proth Prime Search (not extended!) Project. For more information, answers to questions and general banter please do feel free to join us in this thread on our forums.

  • yoyo@home yoyo@home Project link 13 Apr 2014 | 11:00 pm OWS: Optimized Version for Sandybridge News link

    yoyo@home We released an optimized version for Intel Sandybridge architecture. Read more about it in our forum.

  • Einstein@Home: News Einstein@Home: News Project link 11 Apr 2014 | 10:12 am Gravitational Wave search GPU App version News link

    Einstein@Home: News Due to the excellent work of our French volunteer Christophe Choquet we finally have a working OpenCL version of the Gravitational Wave search ("S6CasA") application. Thank you Christophe! This App version is currently considered 'Beta' and being tested on Einstein@Home. To participate in the Beta test, you need to edit your Einstein@Home preferences, and set "Run beta/test application versions?" to "yes". It is currently available for Windows (32 Bit) and Linux (64 Bit) only, and you should have a card which supports double precision FP in hardware. BM

  • BURP: News BURP: News Project link 9 Apr 2014 | 7:03 pm Correction to the previous news post News link

    BURP: News A tiny little spelling error got into the news item from 1st of April causing it to look like BURP had been acquired by Facebook. The intended text was of course: "Happy 1st of April!"

  • Docking@Home Docking@Home Project link 7 Apr 2014 | 11:05 pm Docking@Home is Retiring News link

    Docking@Home With a heavy heart, we are announcing the retirement of the Docking@Home project. Unfortunately, we no longer have the resources to maintain the project. Starting on April 30, 2014 Docking@Home will no longer be distributing new jobs but will continue to collect results. On May 23, 2014 the server will stop accepting results as the project enters retirement. We hope that you can use this time to point your workers to new VC projects. (here is a link to active BOINC projects). Over the past 9 years we’ve had 98,512 Volunteers contribute computing power from 264,535 hosts. We have granted a total of 5,422,290,917 credits, which means our volunteers contributed roughly 159,398,584 Hours (18,196 years!) of computation. Back in Jan we made all of the result data public and we will keep that interface active. Thank you to everyone that made Docking@home a success over the years. It’s been fun! Please join us on the forums to share your best and worst story from the project. Over the past few months we’ve been working on bringing the ExSciTecH project to life. We hope that you will join us in our adventure on this new project. Feel free to stop by…

  • Leiden Classical Leiden Classical Project link 7 Apr 2014 | 11:00 pm Project News 8 april 2014 News link

    Leiden Classical Today a disk has been replaced (RAID) and the famous OpenSSL update was made on this project.

  • GPUGRID: News GPUGRID: News Project link 7 Apr 2014 | 5:10 pm WU: BARNA News link

    GPUGRID: News Hey everyone, I am sending out some WUs to the long queue called BARNA (pun intended). The system we are investigating is Barnase/Barstar which are two proteins that interact with each other. http://en.wikipedia.org/wiki/Barnase http://en.wikipedia.org/wiki/Barstar This will be (as far as I know) our first protein-protein interaction study and we are hoping to study some interactions like the ones in the crystallographic model and further develop the corresponding analysis tools.

  • MilkyWay@Home: News MilkyWay@Home: News Project link 2 Apr 2014 | 3:05 pm New Separation Runs News link

    MilkyWay@Home: News I have started separation runs ps_separation_79_DR8_Rev_7_2_001 and 002 I will be adding some more runs to the list over the next couple of days. Let me know if you see any errors. Jeff Thompson

  • Rosetta@home Rosetta@home Project link 2 Apr 2014 | 8:00 am Project News Apr 2, 2014 News link

    Rosetta@home Journal post from David BakerThere has been very exciting recent progress in designing vaccines and small molecule binding proteins using Rosetta that is described in two recent papers in Nature. These and other recent advances are described in the new Rosetta@Home Research Updates thread. It was suggested there that we send out a monthly email newsletter describing recent progress--we haven't done this before to avoid clogging everybody's inboxes but we certainly could if there is interest.

  • BURP: News BURP: News Project link 1 Apr 2014 | 1:00 pm BURP has been acquired by Facebook inc. News link

    BURP: News In a short press release today the California-based company Facebook Inc. announced that they have bought the BURP rendering platform including all assets for $21 billion. "Facebook Chairman and CEO, Mark Sugarbird" wrote:

    I'm excited to announce that we've agreed to acquire BURP, the leader in BOINC-based online rendering technology using Blender. Facebook's mission is to make the world more open and connected. This has mostly meant building mobile apps that help you share with the people you care about, but at this point we feel we're in a position where we can start focusing on what will come next to enable even more useful, entertaining and personal experiences. BURP's mission is to enable you to experience the impossible. Together the technologies open up the possibility of completely new kinds of experiences!
    The buyout is just one in a series of large technology investments made recently, but the price tag completely dwarfs that of the Oculus Rift. As a consequence of this merger there is going to be some changes in the near future:
    • All accounts will be merged with existing Facebook accounts and will be automatically converted to use your real name and personal picture…

    • SETI@home/AstroPulse Beta: News SETI@home/AstroPulse Beta: News Project link 23 Mar 2014 | 9:16 pm SETI@home 7.28 for ARM-Android released... News link

      SETI@home/AstroPulse Beta: News There are two versions. A version that supports NEON, and a "safe" version the just uses VFP instructions. Devices that support NEON could get either, although there should be a 3:1 preference for the neon version. Please run whichever version you get, as cancelling results will skew the completion statistics.

    • SETI@home: News SETI@home: News Project link 20 Mar 2014 | 9:48 pm Friday March 21 SETI talks to be webcast live. News link

      SETI@home: News The SETI talks by Jill Tarter, Eric Korpela, Shauna Sallmen, and Ian Morrison at the "Search for Life Beyond the Solar System" conference will be broadcast live on Friday, March 21. The scheduled time for the talks is: 1:30PM PDT (2030 UTC) - Jill Tarter 2:00PM PDT (2100 UTC) - Eric Korpela 2:20PM PDT (2120 UTC) - Shauna Sallmen 2:40PM PDT (2140 UTC) - Ian Morrison To connect go to http://connect.arc.nasa.gov/ebi2014/. If you have difficulty with that link, try http://connect.arc.nasa.gov/ebi2014?launcher=false Once you are there, select enter as guest, and enter a name, then click "Enter Room". Participants may get the opportunity to ask questions of the speakers.

    • WEP-M+2 Project: News WEP-M+2 Project: News Project link 19 Mar 2014 | 11:53 am 12-digit factor of P2203 has now been found by the project... News link

      WEP-M+2 Project: News ...47310 times

    • POEM@HOME: News POEM@HOME: News Project link 18 Mar 2014 | 5:31 pm POEM++ 2.0 Release News link

      POEM@HOME: News I've just updated the POEM@HOME Binaries to Version 2.00. This is the first big step for our new GPU project. I'll have to adjust some parameters of the new work units, and will send them out at the end of this week. I'm confident the errors which occurred during the test phase have been resolved. If you encounter any problems nevertheless, please report it in our message boards. Version 2.00 von POEM@HOME ist jetzt verfügbar. Das ist der erste große Schritt für unser neues GPU Projekt. Ich muss noch einige Parameter der neuen Workunits anpassen, und kann diese dann gegen Ende der Woche raus schicken. Ich bin zuversichtlich, dass die Fehler, die während der Testphase aufgetreten sind, beseitigt wurden. Falls jemand dennoch auf Probleme stoßen sollte, meldet sie bitte in unserem Forum.

    • SIXTRACK: News SIXTRACK: News Project link 16 Mar 2014 | 8:43 am Status, March 2014 News link

      SIXTRACK: News First, in reply to a recent query about 2014 workload, thanks to Msssimo: "The majority of the 2014 studies will be devoted to LHC upgrade and the rest to understand the nominal machine. I do not expect any increase in workload when approaching the LHC re-start in 2015, on the other hand, we will all be locked up in the control room and the resources for performing the simulations will be reduced." Second, we have been experiencing major problems with our Windows executables for several months now. There are "small" result differences between Windows and Linux. After extensive testing I believe they are due to the Windows ifort compiler. This will be verified and fixed as soon as I return to CERN next week. In addition new builds of SixTrack for Windows, which now include a call boinc_unzip, are failing on Windows in at least two ways; there is a problem parsing the hardware description (/proc/cpuinfo on Linux) and secondly we get "cannot Create Process" errors. So, we shall first try and build without the hopefully resposible call, and fix the result differences. We can then resume development of the case splitting to smaller WUs and the return of all…

    • SIMAP - Similarity Matrix of Proteins: News SIMAP - Similarity Matrix of Proteins: News Project link 15 Mar 2014 | 9:38 am New workunits for March and April upcoming News link

      SIMAP - Similarity Matrix of Proteins: News During the last week we have imported about 900.000 new proteins from the Uniprot database into SIMAP. The workunits of these sequences will be available from Mon, Mar 17. We expect about a month of further continuous work for SIMAP. Best regards and thanks a lot for crunching SIMAP, Thomas

    • yoyo@home yoyo@home Project link 13 Mar 2014 | 11:00 pm Chemnitz Linux Days 2014 News link

      yoyo@home I will be on the Chemnitz Linux Days 2014 from 15.-16.3. in Chemnitz Germany. Rechenkraft.net has a booth in the main hall where you can meet me and other Rechenkraft.net people. The "Chemnitz Linux Days" is a conference that deals with Linux and Open Source Software. It is open for everyone, novices and experts alike.

    • Docking@Home Docking@Home Project link 10 Mar 2014 | 4:05 pm ExSciTech games beta version online! News link

      Docking@Home Explore the molecules that make up the world around us! Challenge yourself to identify them using molecule flashcards game! Build your own question sets to challenge the rest of us! Join us in the ExSciTecH (Exercise, Science, Technology, and Health) project!ExSciTecH molecule flashcards are live and now in public beta. You can access ExSciTecH here! You can play the flashcards game without an account, but you will need to register a new account to save your high scores and to build your own question sets. Your question sets will be public after we review them. In the forum, there is a tutorial on how to build question sets through this link. We look forward to having experienced volunteers with chemistry background to enrich our question sets. Please note that the account is separate from your Docking@Home account.

    • MindModeling@Home (Beta): News MindModeling@Home (Beta): News Project link 6 Mar 2014 | 8:05 pm Power Shutdown this Saturday (2014-03-08) News link

      MindModeling@Home (Beta): News I apologize for the late notice, but I just received word that the Wright State University Engineering building where the MindModeling servers are located will be shut down temporarily this Saturday 2014-03-08 from 0700-1200 EST. I will be turning off our servers several hours in advance to facilitate a graceful shutdown. During this period, you will not be able to access our scheduler, this website, etc. There is a chance that I may not be able to remotely power-on the devices, in which case we will not have access again until the following Monday. -Tom

    • SETI@home: News SETI@home: News Project link 6 Mar 2014 | 7:25 pm Astropulse database is back. News link

      SETI@home: News Astropulse work is flowing once again. Thanks to Matt and Jeff for performing the necessary brain transplant.

    • MilkyWay@Home: News MilkyWay@Home: News Project link 28 Feb 2014 | 9:07 pm More New N-Body Runs News link

      MilkyWay@Home: News I have started: de_nbody_02_28_orphan_real_0 ps_nbody_02_28_orphan_real_0 de_nbody_02_28_orphan_real_1 ps_nbody_02_28_orphan_real_1 de_nbody_02_28_orphan_real_2 ps_nbody_02_28_orphan_real_2

    • yoyo@home yoyo@home Project link 26 Feb 2014 | 11:00 pm OddWeirdSearch: report on new stage of our search News link

      yoyo@home Check the posting about information from the author about the next stage.


Check out these cool BOINC videos!

QMC@home - Quantum Chemistry in actionQMC@home - Quantum Chemistry in action

 

SETI@home: Listening to the Universe

SETI@home - Listening to the Universe

 

LHC@home - CERN & the Large Hadron Collider (LHC)

LHC@home - CERN & the Large Hadron Collider (LHC) 

 

Check out this science project!

Einstein@home

Einstein@Home is a program that uses your computer's idle time to search for spinning neutron stars (also called pulsars) using data from the LIGO and GEO gravitational wave detectors. Einstein@Home is a World Year of Physics 2005 project supported by the American Physical Society (APS) and by a number of international organizations.

Einstein@home project URL; http://einstein.phys.uwm.edu/

Read more...

Poll Poll 1

Is BOINC manager "User friendly"?
 

Poll Poll 2

How many BOINC projects are you running?
 

Poll Poll 3

Have you ever used an Account Manager?