Opera 2015 - Sept. 14 09:50:45 UTC,
LIGO Gravitational Wave detection
(what we were receiving during that event)

In 12 February  2016 LIGO made the announcement of the first detection of gravitational wave. Original pdf paper can be downloaded from here. Our network at those time was active for OPERA project. This web page simply shows what our Observatory Network was receiving during the the gravitational wave passing. The findings are reported following geographical Italian profile from North to South. These same data (with others various receptions from 13.09.2015 to 09.15.2015)  were supplied to Dr. J. R. Palamos and Dr. Robert Schofield of LIGO, we thank you for the confidence recognized to our monitoring network.

Storms map courtesy of http://www.blitzortung.org
Left map shows the weather conditions between 20 minutes before and 40 minutes after the gravitational event, 
graphs on the right shows the gravitational event in the way detected by LIGO

Here following our receptions.

Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy   Archive real time acquisition with Spectrum Lab, Vertical Geophone and Marconi aerial antenna, 8 hours view (time resolution 40 sec/pixel), GW150914 indicated/marked with white vertical arrow.  Schumann Resonances, ZEVS submarine signals, interharmonics carriers and microphonic effect caused by wind. No RF signals correlated with GW event. Wave file starting from 2015 September 14 08:00:00 UTC , automatically recorded and 4 hours long, can be downloaded from here: 001b__14SEP15-0800_cumianaGE_normalized.wav Geophone on Left channel / Marconi antenna on the right. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Source file analyzed with Sonic Visualizer: Vertical Geophone - Marconi aerial antenna, 4 hours view (time resolution 19.3 sec/pixel) GW150914 marked with red vertical line.  Schumann Resonances, 50 Hz main carrier, interharmonic noise. No RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Source file analyzed with Sonic Visualizer: Vertical Geophone - Marconi aerial antenna,  5 minutes view (time resolution 0.41 sec/pixel). GW150914 marked with red vertical line.  Schumann Resonances, 50 Hz carrier, statics caused by storms and microphonic effec on very low frequencies caused by wind shaking of aerial antenna. Car passing 50m away from geophone on a close country road. No RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Archive real time acquisition with Spectrum Lab,  Marconi aerial antenna, daily multistrips (time resolution 110 sec/pixel) GW150914 marked with white vertical arrow (second strip).  Schumann Resonances, storms and diurnal microphonic effect caused by wind shaking. No anomalous RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Archive real time acquisition with Spectrum Lab, Marconi aerial antenna, 8 hours view (time resolution 40 sec/pixel). GW150914 indicated/marked with white vertical arrow.  Many statics and hum noise. No RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Archive real time acquisition with Spectrum Lab, Vertical Geophone, 1 hour multistrip view (time resolution 4.6 sec/pixel). GW150914 marked with white vertical arrow.  Diurnal noise caused by human activity. No anomalous signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Archive real time acquisition with Spectrum Lab, two orthogonal ICS101 induction coils, 8 hours view (time resolution 40 sec/pixel). GW150914 marked with white vertical arrow.  Some inter-harmonics carrier, Schumann Resonances on background overcome by noise coming from railway 5 km away. No RF signals correlated with GW event. Wave file starting from 2015 September 14 08:00:00 UTC , automatically recorded and 4 hours long, can be downloaded from here: 005b_14SEP15-0800_cumianaHH_normalized.wav NS induction coil on Left channel, EW on the Right one. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Source file analyzed with Sonic Visualizer: two orthogonal ICS101 induction coils, 4 hours view (time resolution 19.3 sec/pixel). GW150914 marked with red vertical line.  Schumann Resonances on background, train passing 5 km away, inter-harmonics carriers. No RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Source file analyzed with Sonic Visualizer: two orthogonal ICS101 induction coils,  5 minutes view (time resolution 0.41 sec/pixel) GW150914 marked with red vertical line.  Schumann Resonances on left part. No RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Archive real time acquisition with Spectrum Lab, two orthogonal ICS101 induction coils,  1 hour multistrips view (time resolution 4.6 sec/pixel). GW150914 marked with white vertical arrow.  Schumann Resonances on background and many train passing. No RF signals correlated with GW event. Monitoring St. 01 - IK1QFK  CUMIANA (TO), NW Italy Archive real time acquisition with Spectrum Lab, two orthogonal ICS101 induction coils, daily multistrips (time resolution 110 sec/pixel). GW150914 marked with white vertical arrow.  First Schumann resonances detected during the nigh, some SRS, PC1, Storms. No RF signals correlated with GW event. Monitoring St. 02 - CSP VLF MONITORING STATION From Pontese dew (TO), NW Italy   Archive real time acquisition with Spectrum Lab, Differential vertical dipole ADA and Aerial Loop, 8 hours view (time resolution 40 sec/pixel). GW150914 /marked with white vertical arrow.  Microphonic effects caused by wind shaking, 50 Hz main carrier, many inter-harmonics carriers caused by solar panel inverter. No RF signals correlated with GW event. Monitoring St. 02 - CSP VLF MONITORING STATION From Pontese dew (TO), NW Italy   Archive real time acquisition with Spectrum Lab, Differential vertical dipole ADA and Aerial Loop, 8 hours view (time resolution 40 sec/pixel). GW150914 marked with white vertical arrow. Many statics an hum noise caused solar panel inverter . No RF signals correlated with GW event. Monitoring St. 02 - CSP VLF MONITORING STATION From Pontese dew (TO), NW Italy     Archive real time acquisition with Spectrum Lab, Differential vertical dipole ADA and Aerial Loop,  daily multistrips (time resolution 110 sec/pixel). GW150914 marked with white vertical arrow (3th and 4th strips).  Statics, tweaks and hum noise coming from solar panels inverter. No RF signals correlated with GW event. Monitoring St. 05 - NORTHERN CROSS RADIOTELESCOPE From Medicina (IT - Bologna), N Italy     Archive real time acquisition with Spectrum Lab, ULFO induction coil, 8 hours view (time resolution 40 sec/pixel). GW150914 marked with white vertical arrow.  Schumann Resonances marked on left part, local storm start 1 hours before. No RF signals correlated with GW event. Wave file starting from 2015 September 14 08:00:00 UTC , automatically recorded and 4 hours long, can be downloaded from here: h013b__14SEP15-0800_medicinaHG_normalized.wav Induction coil on Left channel / Geophone on the right one. Monitoring St. 05 - NORTHERN CROSS RADIOTELESCOPE From Medicina (IT - Bologna), N Italy     Source file analyzed with Sonic Visualizer: ULFO induction coil - Vertical Geophone,  4 hours view (time resolution 19.3 sec/pixel). GW150914 marked with red vertical line.  Storm starts 1 hour before. No RF signals correlated with GW event. Monitoring St. 05 - NORTHERN CROSS RADIOTELESCOPE From Medicina (IT - Bologna), N Italy     Source file analyzed with Sonic Visualizer: ULFO induction coil - Vertical Geophone, 5 minutes view (time resolution 0.41 sec/pixel). GW150914 marked with red vertical line.  Some statics, inter-harmonics carriers. No RF signals correlated with GW event. Monitoring St. 05 - NORTHERN CROSS RADIOTELESCOPE From Medicina (IT - Bologna), N Italy     Archive real time acquisition with Spectrum Lab, ULFO induction coil, 1 hour multistrip view (time resolution 4.6 sec/pixel). GW150914 marked with white vertical arrow.  Schumann Resonances on background, wind shaking of coil and some inter-harmonics carrier. No RF signals correlated with GW event. Monitoring St. 05 - NORTHERN CROSS RADIOTELESCOPE From Medicina (IT - Bologna), N Italy     Archive real time acquisition with Spectrum Lab, ULFO induction coil, daily multistrips (time resolution 110 sec/pixel). GW150914 marked with white vertical arrow.  1st Schumann Resonance marked on left part, some PC1, storm with wind shaking. No RF signals correlated with GW event. Monitoring St. 05 - NORTHERN CROSS RADIOTELESCOPE From Medicina (IT - Bologna), N Italy     Archive real time acquisition with Spectrum Lab, Vertical Geophone, 1 hour multistrip view (time resolution 4.6 sec/pixel). GW150914 marked with white vertical arrow on right bottom.  No anomalous signals correlated with GW event. Monitoring St. 04 - ROMAGNA OBSERVATORY From Sogliano al Rubicone(FC), N Italy. Archive real time acquisition with Spectrum Lab, ICS101 induction coil, 8 hours view (time resolution 40 sec/pixel). GW150914 marked with white vertical arrow.  Schumann Resonances marked on right part. Much noise caused by local storm. No RF signals correlated with GW event. Wave file starting from 2015 September 14 08:00:00 UTC , automatically recorded and 4 hours long, can be downloaded from here: 011b_14SEP15-0800_soglianoH_normalized.wav ICS101 induction coil Monitoring St. 04 - ROMAGNA OBSERVATORY From Sogliano al Rubicone(FC), N Italy. Source file analyzed with Sonic Visualizer: ICS101 induction coil, 4 hours view (time resolution 19.3 sec/pixel). GW150914 marked with red vertical line.  Schumann Resonances marked on right part, wind shaking and local noise below 2 Hz. No RF signals correlated with GW event. Monitoring St. 04 - ROMAGNA OBSERVATORY From Sogliano al Rubicone(FC), N Italy. Source file analyzed with Sonic Visualizer: ICS101 induction coil, 5 minutes view (time resolution 0.41 sec/pixel) GW150914 marked with red vertical line.  Schumann Resonances on background, statics and very low frequency local noise. No RF signals correlated with GW event. Monitoring St. 04 - ROMAGNA OBSERVATORY From Sogliano al Rubicone(FC), N Italy.   Archive real time acquisition with Spectrum Lab, ICS101 induction coil, daily multistrips (time resolution 110 sec/pixel). GW150914 marked with white vertical arrow.  1st Schumann Resonance marked on left part, many SRS and some PC1. No RF signals correlated with GW event, preceded by local storm. Monitoring St. 03 - ETNA RADIO OBSERVATORY From NICOLOSI (CT), Etna Park, Sicily, S Italy    Archive real time acquisition with Spectrum Lab, induction coil, 8 hours view (time resolution 40 sec/pixel). GW150914 marked with white vertical arrow.  Schumann Resonances marked on right part, microphonic effect caused by wind shaking, local noise at very low frequencies and a PC1 (geomagnetic pulsation) 4 hours before gravitational wave. No RF signals correlated with GW event. Geomagnetic activity detected by Kiruna Geophysical Institute (Sweden ) http://www.irf.se/maggraphs/puls.php In dashed oval the same geomagnetic pulsation seen before, here detected by Kiruna observatory in Sweden. Wave file starting from 2015 September 14 08:00:00 UTC , automatically recorded and 4 hours long, can be downloaded from here: 017b_14SEP15-0800_etnaGH_normalized.wav Geophone on Left channel / Induction coil on the right. Monitoring St. 03 - ETNA RADIO OBSERVATORY From NICOLOSI (CT), Etna Park, Sicily, S Italy    Source file analyzed with Sonic Visualizer:   Vertical Geophone and Induction Coil,  4 hours view (time resolution 19.3 sec/pixel). GW150914 marked with red vertical line.  Schumann Resonances on background. No RF signals correlated with GW event. Monitoring St. 03 - ETNA RADIO OBSERVATORY From NICOLOSI (CT), Etna Park, Sicily, S Italy    Source file analyzed with Sonic Visualizer:   Vertical Geophone and Induction Coil,  5 minutes view (time resolution 0.41 sec/pixel). GW150914 marked with red vertical line.  Prevalence of microphonic noise, with similar traces on coil and geophone placed close. No RF signals correlated with GW event.   Monitoring St. 03 - ETNA RADIO OBSERVATORY From NICOLOSI (CT), Etna Park, Sicily, S Italy    Archive real time acquisition with Spectrum Lab,  induction coil, 1 hour multistrips view (time resolution 4.6 sec/pixel) GW150914 indicated/marked with white vertical arrow.  Much wind shaking. No RF signals correlated with GW event.   Monitoring St. 03 - ETNA RADIO OBSERVATORY From NICOLOSI (CT), Etna Park, Sicily, S Italy    Archive real time acquisition with Spectrum Lab, induction coil, daily multistrips (time resolution 110 sec/pixel). GW150914  marked with white vertical arrow. 1st Schumann Resonance marked on left part, weak PC1, local noise below 2 Hz every evening at the same time. No RF signals correlated with GW event. Monitoring St. 03 - ETNA RADIO OBSERVATORY From NICOLOSI (CT), Etna Park, Sicily, S Italy    Archive real time acquisition with Spectrum Lab, Vertical Geophone,  1 hour multistrips view (time resolution 4.6 sec/pixel). GW150914 marked with white vertical arrow.  Prevalence of diurnal noise caused by human activity. No anomalous signals correlated with GW event.

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