LISA Data Challenge Workshop

25 juil. 2022, 17:30 → 27 juil. 2022, 19:30 Europe/Paris

Online

Jean-Baptiste Bayle (University of Glasgow), Maude Le Jeune (APC), Michael Katz (Albert Einstein Institute), Natalia Korsakova (APC), Quentin Baghi (CEA Saclay), Stanislav Babak (APC), Sylvain Marsat (L2IT), Tyson Littenberg (NASA MSFC)

Workshop organized by the LDC working group featuring tutorials on LDC data generation, waveform computation and data analysis. The workshop will take place online during the LISA Symposium 14.

It is split in four sessions covering:

1. LDC data generation (25 Jul 2022, 17:45-18:30 CEST)
2. Fast gravitational-wave source waveform generation  (25 Jul 2022, 18:40-19:25 CEST)
3. Detection and parameter estimation of Galactic compact binaries (27 Jul 2022, 17:45-18:30 CEST)
4. Parameter estimation of massive black hole binaries (27 Jul 2022, 18:40-19:25 CEST)

LDC workshop Slack channel

Monday's Zoom recording

Wednesday's Zoom recording

lundi 25 juillet

17:45 → 18:30 Data generation

This tutorial is meant to show the general process followed to generate LDC data, including gravitational-wave (GW) signal and noise.

The objective is to:
- Display source parameter: get the first MBHB from spritz
- Compute h+,hx with the LDC
- Compute projected strain with gw-response and save to file
- Compute projected strain with the LDC
- Inject GW signal in lisa-instrument or in pyTDI

Orateurs: Jean-Baptiste Bayle (University of Glasgow), Maude Le Jeune (APC)

Data generation Google Colab notebook

18:30 → 18:40 Break

18:40 → 19:25 Fast waveform generation

This tutorial shows how to use the fast waveform generators to match signals injected in LDC datasets.

The objective is to:
- Generate fast waveforms in the frequency domain for Galactic binaries (GB)
- Generate fast waveforms in the frequency domain for massive black hole binaries (MBHB)
- Generate fast waveforms for EMRI (if time permits)
- Plot the waveform against simulated data

Orateurs: Natalia Korsakova (APC), Michael Katz (Albert Einstein Institute)

Fast waveform generation tutorial repository

mercredi 27 juillet

17:45 → 18:30 Detection and parameter estimation of Galactic binaries

This tutorial shows the general process to follow when analysing LDC data to detect and characterize gravitational-waves from Galactic compact binaries sources.

The objective is to:
1. Load and plot the TDI data in time and frequency domain
2. Compute a source SNR
3. Compute a likelihood
4. Compute the F-statistics
5. Detect sources using the F-statistics
6. Perform parameter estimation

Orateur: Dr Quentin Baghi (CEA Saclay)

Galactic binaries Google Colab notebook

18:30 → 18:40 Break

18:40 → 19:25 MBHB parameter estimation

This tutorial shows the general process to follow when analyzing LDC data to detect and characterize gravitational-waves from massive black hole binary sources.

The objective is to:
1. Load and plot the TDI data in time and frequency domain
2. Compute a source SNR
3. Compute a likelihood
4. Transformation to LISA frame and how it helps
6. Perform parameter estimation in the noiseless case

Orateurs: Sylvain Marsat (L2I Toulouse, CNRS/IN2P3), Stanislav Babak (APC)

MBHB Google Colab notebook