BL on LOFAR An overview of the Breakthrough Listen on LOFAR - PowerPoint PPT Presentation

BL on LOFAR An overview of the Breakthrough Listen on LOFAR International Stations program Griffin Foster

LOFAR-UK (51° 8 40.42 N, 1° 26 18.89 W) ′ ″ ′ ″ Chilbolton, UK LBA: 30 – 90 MHz HBA: 110 – 240 MHz 96 Elements LBA: 70 m effective diameter HBA: 56 m effective diameter

I-LOFAR (53° 5 43.15 N, 7° 54 55.95 W) ′ ″ ′ ″ Birr, Ireland 195 kHz Sub-bands 488 Steerable 8-bit ’beamlets’ HBA: 1 st stage analogue beamformer (30 deg FWHM) LBA: complete hemisphere

LOFAR Sweden (57° 23 35 N, 11° 55 4 E ) ′ ″ ′ ″ Onsala, Sweden Uniform digital interface Local-mode observing community Sky-mapping

Previous Science Use Cases Pulsar Monitoring Solar Monitoring Fast Radio Burst Surveys Ionospheric Scintillation

Why is single station observing under-utilized?

Why is single station observing under-utilized? Lack of high-level observing interface

Why is single station observing under-utilized? Lack of generic data recorder (which writes to standard formats)

Breakthrough Listen on LOFAR back-end Reuse and integrate existing code: Observing controller [iLiSA / T. Carozzi (OSO)] Observing Scheduler [J.-M. Griessmeier (Nancay)] Sky-mapper [SWHT / G. Foster] Statistics Data Wrappers [LSS / G. Foster] Build interface to use BL data recorder: Generic beamlet voltage recorder to GUPPI raw format GPU-based spectrometer to channelize and integrate Write high-frequency resolution SETI data products

I-LOFAR LOFAR-UK BL Head Node BL Head Node Node Provisioning (Ansible) Node Provisioning (Ansible) Observing Observing Pipeline management Pipeline management Realta Cluster ARTEMIS Cluster UCC1 Compute Node adagio1 Compute Node UCC2 Compute Node adagio2 Compute Node UCC3 Compute Node adagio3 Compute Node UCC4 Compute Node adagio4 Compute Node NUIG1 Storage Node BL Storage Node

BL Beamlet Data Recorder Stack Capture beamlet voltage data Total data rate: 3.125 Gbps (34 TB/day) 16, 8, 4-bit modes (48 MHz, 96 MHz, 192 MHz) Observing runs are typically 3 days Record up to 130 TB to disk on storage node Use BL GPU-based spectrometer to channelize and integrate Standard formats: GUPPI raw, filterbank, BL HDF5 Multiple data products: SETI, Pulsar, Solar, … During ILT mode use compute nodes to run search pipelines Move results to long-term storage and clear storage node

75 MHz Sky Map (1 subband, 1 snapshot) Spherical Map UVW Coverage

75 MHz Sky Map (1 subband, 3 snapshots) Spherical Map UVW Coverage

75 MHz Sky Map (1 subband, 6 snapshots) Spherical Map UVW Coverage

75 MHz Sky Map (1 subband, 15 snapshots) Spherical Map UVW Coverage

75 MHz 24 Hour Sky Map

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products

The Breakthrough Listen on LOFAR Survey Observations during local mode (~60 hours / week) 8 x 12 MHz fixed declination drift survey Covering LBA (30-90 MHz) and HBA (110-240 MHz), focus on 110-190 MHz 1.43 Hz resolution (8 million channels over 12 MHz), 5.4 seconds Multi-site RFI mitigation using I-LOFAR and LOFAR-UK (and Sweden in the future) Record correlation products to generate daily sky maps Record additional Pulsar/FRB and solar data products FoV: 20 sq. deg. (HBA 240 MHz) - 800 sq. deg. (LBA 30 MHz)

Compute nodes and storage nodes setup at both I-LOFAR and LOFAR-UK Setting up the BL head node at LOFAR-UK tomorrow (Dave and I have a train in about 30 minutes) Setting up the BL head node at I-LOFAR next week Allocated test observations in November