Differences between revisions 1 and 8 (spanning 7 versions)
⇤ ← Revision 1 as of 2009-05-09 14:17:04 →
Size: 8036
Editor: whitehole
Comment:
← Revision 8 as of 2009-05-09 14:41:50 → ⇥
Size: 357
Editor: whitehole
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
'''LCGT data analysis white paper --DRAFT'''
<<TableofContents(2)>>		 = LCGT data analysis white paper --DRAFT =
<<TableOfContents(2)>>
Line 6: Line 6:
= Searches for signals from compact binary coalescence =

 == Gravitational waves from the coalescence of compact binary systems . . . . . . . . . . . . . 5

 == Sciencegoals .......................................... 6

 == SearchStrategies ........................................ 7

  === Matched filtering .................................... 8

  === Analysis pipeline .................................... 8

  === Background estimation ................................. 9

  === Instrumental and environmental vetoes ........................ 10

  === Efficiency evaluation .................................. 10

  === Follow-up of candidate events ............................. 10

  === Pipeline of pipelines .................................. 11

  === Uncertainties in theoretical waveforms. . . . . . . . . . . . . . . . . . . . . . . . . 11

  === Astrophysical rates ................................... 12

  === Externally triggered searches.............................. 12

  === Current status and goals..................................... 13

  === Recently completed searches.............................. 13

  === Near-term priorities................................... 13

  === Pipeline development.................................. 14

2.4.4 S5/VSR1 goals ..................................... 15

2.4.5 S6/VSR2 goals ..................................... 18

2.4.6 Advanceddetectorera ................................. 22

3 Searches for general burst signals 23
3.1 SourcesofGravitationalWaveBursts ............................. 23

3.2 ScienceGoalsoftheBurstGroup ............................... 25

3.3 Recentscienceresults...................................... 27

3.4 Searchpipelineoverview .................................... 28

3.4.1 Detectionalgorithms .................................. 28

3.4.2 Sourcelocationandwaveformreconstruction . . . . . . . . . . . . . . . . . . . . . 30
3.4.3 Dataqualityandvetoes................................. 30

3.4.4 Simulations....................................... 30

3.4.5 Background....................................... 31

3.4.6 Detectioncriteria .................................... 32

3.5 Statusandprospectsofburstsearches ............................. 32

3.5.1 Triggeredsearches ................................... 32

3.5.2 Untriggeredsearches .................................. 36

3.6 Plansandprospectsfor2008-2009 ............................... 37

3.6.1 completionofS5/VSR1analysis ........................... 37

3.6.2 preparationofS6/VSR2(mid2009) .......................... 38

3.6.3 Developmentprojects ................................. 39

2

LSC-Virgo data analysis white paper -DRAFT as of 2008/10/28

4 Searches for continuous-wave signals 40
4.1 Non-accretingpulsars...................................... 41

4.1.1 TimedomainBayesianmethod ............................ 41

4.1.2 WideParameterSearchoftheCrabPulsar) . . . . . . . . . . . . . . . . . . . . . . 43
4.1.3 Virgotargetedsearches ................................ 43

4.2 Non-pulsingnon-accretingneutronstars ............................ 44

4.2.1 CassiopeiaA ...................................... 45

4.2.2 Virgosemi-targetedsearch ............................... 45

4.2.3 Othertargets ...................................... 46

4.3 Previouslyunknownnon-accretingobjects ........................... 46

4.3.1 Semicoherentsearches ................................. 47

4.3.2 Cross-correlationsearches ............................... 48

4.3.3 Hierarchical Searches and Einstein@Home
.................... 49

4.3.4 Searchesforsourcesinglobularclusters . . . . . . . . . . . . . . . . . . . . . . . 50
4.3.5 Searchesforsourcesnearthegalacticcenter . . . . . . . . . . . . . . . . . . . . . 51
4.3.6 Semi-targeted searches for “transient CW signals” . . . . . . . . . . . . . . . . . . 51
4.3.7 Virgoblindsearches .................................. 52

4.4 Accretingneutronstars ..................................... 53

4.4.1 Cross-correlation searches for known binary systems . . . . . . . . . . . . . . . . . 53
4.4.2 Sidebandsearchforknownbinarysystems . . . . . . . . . . . . . . . . . . . . . . 54
4.4.3 TwoSpectsearchforunknownbinarysystems . . . . . . . . . . . . . . . . . . . . 55
4.4.4 Quadraticsearchforunknownbinarysystems . . . . . . . . . . . . . . . . . . . . 55
4.5 NeedsandplansforS6/VSR2 ................................. 56

5 Searches for stochastic backgrounds 57
5.1 Sources of Stochastic Gravitational-wave Background . . . . . . . . . . . . . . . . . . . . . 57
5.2 StochasticSearchMethod.................................... 57

5.2.1 All-SkySearch ..................................... 58

5.2.2 DirectionalSearch ................................... 59

5.2.3 Mapping ........................................ 59

5.2.4 Multi-baseline:LSC/VIRGOjointsearch . . . . . . . . . . . . . . . . . . . . . . . 60
5.2.5 H1H2All-SkySearch ................................. 61

5.3 ResultsandPlans ........................................ 61

5.3.1 S4Results ....................................... 61

5.3.2 StatusofS5Searches.................................. 62

5.3.3 PlansforS6Searches.................................. 63

6 The characterization of the data 64
6.1 LIGODetectorCharacterization ................................ 64

6.1.1 Introduction....................................... 64

6.1.2 StorageofDataQualityInformation ......................... 65

6.1.3 SoftwareInfrastructure ................................. 66

6.1.4 Calibrations....................................... 68

6.1.5 Timing ......................................... 69

6.1.6 GlitchInvestigations .................................. 70

6.1.7 EnvironmentalDisturbances .............................. 71

6.1.8 DataRunSupport.................................... 72

6.1.9 LSCPresenceattheObservatories........................... 73

3

LSC-Virgo data analysis white paper -DRAFT as of 2008/10/28

6.2 GEODetectorCharacterization................................. 73

6.2.1 Introduction....................................... 73

6.2.2 DataAcquisitionandtiming .............................. 74

6.2.3 Straincalibration .................................... 74

6.2.4 Glitchstudies ...................................... 75

6.2.5 Dataquality....................................... 76

6.2.6 GEOdetectoranddatacharacterisationpost-S5 . . . . . . . . . . . . . . . . . . . . 77
6.3 VirgoDetectorCharacterization ................................ 78

6.3.1 Introduction....................................... 78

6.3.2 Detectorstatusmonitors ................................ 78

6.3.3 CalibrationandHardwareInjections .......................... 79

6.3.4 Noisestudies ...................................... 79 		= Searches for signals from compact binary coalescence =
Line 194: Line 9:

6.3.5 DC resulting from the searches for impulsive events . . . . . . . . . . . . . . . . . 80
7 Computing and Software 81
7.1 Currentstatus .......................................... 81

7.2 ActivitiesinsupportofLDGOperations ............................ 82

7.3 DataAnalysisSoftwareDevelopmentActivities . . . . . . . . . . . . . . . . . . . . . . . . 83
7.4 Intermediate-termdevelopmentactivities............................ 85

7.5 Long-termgoals......................................... 87

7.6 Virgocomputingandsoftware ................................. 88

7.6.1 ComputingattheEGO/Virgosite ........................... 88

7.6.2 ComputingatCNAF(Bologna,Italy) ......................... 89

7.6.3 ComputingatCCIN2P3(Lyon,France) ........................ 89

7.6.4 Virgosoftware ..................................... 89

References 90
4 		= Searches for general burst signals =
Line 220: Line 12:
= Searches for continuous-wave signals =
Line 221: Line 14:

= Searches for stochastic backgrounds =


= The characterization of the data =


= Computing and Software =

LCGT data analysis white paper --DRAFT

Contents

  1. LCGT data analysis white paper --DRAFT
  2. Introduction
  3. Searches for signals from compact binary coalescence
  4. Searches for general burst signals
  5. Searches for continuous-wave signals
  6. Searches for stochastic backgrounds
  7. The characterization of the data
  8. Computing and Software

Introduction

Searches for signals from compact binary coalescence

Searches for general burst signals

Searches for continuous-wave signals

Searches for stochastic backgrounds

The characterization of the data

Computing and Software

KAGRA/Subgroups/DAS/gw_search/white_paper_2009 (last edited 2012-06-06 18:26:45 by OsamuMiyakawa)