[PDF] Top 20 Results of the first coincident observations by two laser-interferometric gravitational wave detectors

... the detectors are most sensitive in a frequency range from about 800 Hz to 3 kHz, and this overlaps with only 1/5 of the bandwidth of our burst ...bar detectors is generally quoted in terms of their ... See full document

... coincidentally in the ALLEGRO and the LIGO Livingston (LLO) detectors. The A and B sets of injections took place during the XARM and NULL observing times, respectively. Independent of the actual orientation, the ... See full document

... was first implemented on the VOPO2 ...second laser, reducing cost and control loop ...auxiliary laser is replaced with two AOMs, which up-shift and down-shift the frequency of a portion of the ... See full document

... detect gravitational waves started in the 1960s when Joseph Weber con- structed resonant bars and attempted to read out the excitations of the bars by gravitational-wave bursts ...scale, laser ... See full document

... Using gravitational waveforms from CCSN simulations, waveforms generated with phenom- enological astrophysical models, and ad hoc waveforms, we measure the sensitivity of our ...the first-generation ... See full document

... requires two or more GW ...using two resonant bar de- tectors [20] and also using two or more kilometer-scale GW interferometers (IFOs) [22, 23, ...the results of the first ... See full document

... present results is that the passage of a GW produces a time-dependent perturbation in the intensity interference of a distant light sources, an interference which would otherwise have a static ... See full document

... As detailed here, the performance of the CESAR algorithm is perhaps too slow for con- venient usage. One approach to mitigating this factor would be to introduce a persistent memory store that keeps track of the slope ... See full document

... The results of the double coincidence analysis showed that the level of background with the current pipeline was too high to detect gravitational waves at threshold of ...of gravitational wave ... See full document

... any two orthogonal quadratures (equation ...these two separate quantum noise types, shot noise and radiation pressure noise, were driven separately by these orthogonal vacuum ...in interferometric ... See full document

... Arm cavities in the gravitational wave detector are single ported Fabry-Perot cavities, as shown in figure 1.4 (c). The storage time is proportional to the linewidth, determined by the length of the cavity ... See full document

... of interferometric detectors operating in co-ordination to extract the maximal scientific ...generation detectors like Ad- vanced LIGO (aLIGO), Advanced VIRGO & GEO-HF) form a solid basis for the ... See full document

... as laser-interferometric GW detectors, particularly those encompassing modifications which utilise multiple laser frequencies: so-called multi-carrier ... See full document

... The Laser Interferometer Gravitational Wave Observatory (LIGO) consists of two widely separated 4 km laser interferometers designed to detect gravitational waves from distant ... See full document

... the two calendar year science run, as our knowledge of the long-term characteristics of the instrument increased, a great deal of improvements were made to our measurement techniques compared with prior ... See full document

... The laser is then rerouted using a flipper mirror to travel vertically up the side of the machine and along the hori- zontal arm to the galvanometers, from where it can be directed to the weld ... See full document

... the two DC output signals, as the shadow passed firstly across photodiode element PDa , and then across PDb ...the two photodiode detector elements were monitored as a function of fibre position, and then ... See full document

... The true measurement of the relative frequency noise between the two lasers when the auxiliary laser is phase locked to the science laser for the case where: a the fibre is bypassed, b t[r] ... See full document

... Interferometer Gravitational wave Observatory) gravitational wave ...displacement detectors, located at a distance of 74 fibre diameters ... See full document

... Interferometer Gravitational-wave Observatory) project has begun its search for gravitational waves, and efforts are being made to improve its ability to detect ...the gravitational ... See full document