The current status of SETI in Sardinia: technological and scientific activities
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1 The current status of SETI in Sardinia: technological and scientific activities Andrea Melis & Delphine Perrodin National Institute for Astrophysics Astronomical Observatory of Cagliari SETI Italia, June 05, 2017
2 " Summary Brief overview of the Astronomical Observatory of Cagliari (OAC) and the Sardinia Radio Telescope Ongoing SETI development Scientific activities Conclusions
3 " OAC in INAF
4 " OAC campus
5 " Radio telescopes in Italy
6 " Sardinia Radio Telescope The Sardinia Radio Telescope is a general purpose fully steerable radio telescope able to function in the range 300 MHz 115 GHz. 6th IAA Symposium on Search for Life Signatures, Paris March 26-27, 2015
7 " Focal positions
8 " First light receivers
9 " SRT Major revision
10 " Receivers under development Mono-feed C-low receiver ( GHz) 7-feed S-band receiver (3 4.5 GHz) 19-feed Q-band receiver (33 50 GHz) Mono-feed W-band receiver ( GHz) ex IRAM Phased Array Feed C-band receiver (PHAROS2) in the context of the SKA Advanced Instrumentation Program
11 " PHAROS Focal plane array of PHAROS Vivaldi antennas and vacuum window
12 " ITPM
13 " Alternative piggy-back SETI with PAF With a phased array feeds several beams can be obtained simultaneously This also help for RFI mitigation The field of view, although limited, allow for observing more different sky areas One (or more) beams can be dedicated for SETI targets
14 SArdinia Roach2-based Digital Architecture for Radio Astronomy
15 " Fornax_A observed at 7 GHz with SARDARA Credits: Murgia et al.
16 First papers published - M. Murgia et al. Sardinia Radio Telescope wide-band spectral-polarimetric observations of the galaxy cluster 3C129, Monthly Notices of the Royal Astronomical Society, F. Govoni et al. Sardinia Radio Telescope observations of Abell 194. The intra-cluster magnetic field power spectrum, 2017, Astronomy&Astrophysics, I. Prandoni et al. The Sardinia Radio Telescope: from a technological project to a radio observatory, Astronomy&Astrophysics, E. Egron et al. Observations of SNR IC443 and W44 with the Sardinia Radio Telescope at 1.5 GHz and 7 GHz, Monthly Notices of the Royal Astronomical Society, 2017
17 Algorithm under investigation for SETI KLT (Kahrunen-Loeve Transform), in collaboration with C. Maccone, P. Pari and Nicolò Antonietti Wavelet Fast Fourier Transform (SERENDIP VI)
18 SERENDIP VI Collaboration with UC Berkeley to make a porting in Sardinia of the SERENDIP 6, and in particular with David MacMahon One ROACH2-GPU chain will be dedicated for piggy-back SETI, other ones can be available in basis of the running observation The same system will be used for FRB search and for pulsar in coherent observing mode The system should be ready and operative for mid 2018
19 Use of the SRT for SETI activities Piggy-backing for most of the astronomical observations. We are preparing all the necessary hardware/software infrastructure in order to be ready in that Dedicated observations (to be allocated to a normal proposal process)
20 Breakthrough Listen at SRT? GBT & Parkes offers ~20% of telescope time After the summer we organize a meeting in Cagliari to discuss this possible scenario for the Sardinia Radio Telescope. The president of the National Institute for Astrophysics (Nicolò D'Amico) will like to be present at the meeting
21 OAC/SRT SETI team SETI Senior Advisor to the INAF Scientific Department: Stelio Montebugnoli OAC/SRT organization Project leaders: Andrea Possenti, Andrea Melis Technological people: Raimondo Concu, Andrea Melis Outreach: Silvia Casu Scientific coordinator: Delphine Perrodin Scientific team: Giambattista Aresu, Marta Burgay, Silvia Casu, Alessandro Corongiu, Elise Egron, Francesca Loi, Sara Loru, Matteo Murgia, Alberto Pellizzoni, Delphine Perrodin, Maura Pilia, Valentina Vacca
22 SETI data analysis While we prepare for future SETI data acquisition (whether in piggy-back or dedicated time), we will be learning how to perform the analysis of SETI data: - Test SETI detection software on BL baseband data (from GBT) - Test KLT method on BL data
23 Pulsar research at SRT Radio team: M. Burgay, A. Corongiu, D. Perrodin, A. Possenti Multi-wavelength team: M. Bachetti, E. Egron, N. Iacolina, A. Pellizzoni, M. Pilia, A. Trois PULSAR TIMING Monitoring of MSPs at L-band for LEAP project (simultaneous observations with 5 European radio telescopes) Non-simultaneous EPTA observations at L-band, P-band, S-band. Find more stringent limits on background of SMBHBs and hopefully detect GW! (decade-long project) Tests of strong gravity in binary systems Monitoring of eclipsing binaries
24 European Pulsar Timing Array (EPTA) 100m Effelsberg Telescope (Germany) 94m equivalent Nancay Radio Telescope (France) 94m equivalent WSRT (Netherlands) 76m Lovell Telescope (UK) 64m Sardinia Radio Telescope (Italy) Sardinia
25 LEAP: The Large European Array for Pulsars Supported by ERC Advanced Grant (2M euro, PI: M. Kramer) From September 2009 to September 2014 Project continued with local funding at each institution
26 LEAP team Ben Stappers James McKee Lin Wang Gemma Janssen Cees Bassa Roy Smits Sotiris Sanidas Michael Kramer Ramesh Karuppusamy Kuo Liu Weiwei Zhu CHINA: KJ Lee Delphine Perrodin + SRT astrophysical validation team ( ) + early science observing team: M. Burgay, S. Casu, R. Concu, A. Melis, M.
27 LEAP: the experimental design
28 Pulsar research at SRT PULSAR SEARCHING 7-beam S-band project funded by Sardinia Region (>2013). Search for MSPs in the Galactic Center Pulsar search software with GPUs FRB searches [building on M. Burgay & A. Possenti s expertise as part of the SUPERB collaboration] Search for radio counterparts to LIGO/VIRGO GW detections
29 Pulsar instrumentation at SRT So far have used the DFB + ROACH-1 backends L-band: MHz P-band: MHz Since 2014, ROACH-1 with 8-node CPU cluster to cover LEAP band ( MHz) Near future: use of 2 ROACH-1 for L-band and P-band simultaneously. GPUs will enable full L-band (500 MHz) Further ahead: ROACH2 s + SERENDIP VI
30 Pulsar and FRB searches with BL data In parallel with testing of SETI detection software, collaborate on pulsar and FRB search pipelines Expertise from OAC scientists in FRB searches with SUPERB collaboration (M. Burgay & A. Possenti) Test pulsar and FRB pipelines on BL data (BL servers) Test pipelines on new cluster OAC Possibility to analyze pulsar timing data When SERENDIP VI is installed at SRT, we will have pipelines ready for SETI + pulsars + FRB searches
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