Subject: Notes from the data analysis section, what do we do with notes/summaries, post them? From: "Szabi's iPhone" Date: 5/30/12 10:26 AM To: Szabolcs Marka , "gwb-soc@gwbursts.org" , Ik Siong Heng Laura summarized the interferometer status for LIGO and the staged plan for aLIGO sensitivity forecast. Narrowbanding needs to have more explanatory publications to guide theory work. Which curve should you use for theory predictions? Sam: Zero Detuning High Power Question from the Theory side rather: Which curve leads to the best theory results. Understood that not all of them will be actually realized. How easy to go between narrow banding and other configurations? Can be fast or troublesome. Follow the evolution of a cosmic process? 2017 operation is low frequency improvement and eLIGO above few hundred Hz. Initial science needs to be optimized for this, probably binaries. More massive sources emphasized. Below 50Hz the sensitivity might not be realized as the low frequency was always troublesome. We might not have an EM counterpart with the first detection. Politics with E&M and other partners will be done even before the rutine discovery era. We need a really careful analysis by experimentalist, theorist and observational experst to determine what is the allowed delay for trigger distribution, as prompt response is increasingly difficult and labour intensive as response time decreases. Wide range of opinions on what data, when, and where goes public. non-LIGO experts want as much as possible as fast as possible. We need multimessenger science from day zero, because... - rare high value cosmic events are rare, so they might happen only once during the lifetime of aLIGO - practice transmission pipelines Based on SWIFT experience open data still gives enough opportunity for the team to publish. There is little loss from scoops and duplications. MoU based solutions had support and opposition. Discussion and consensus is necessary to define what information needs to be included in the LIGO observational papers to allow free interpretation of the results by theorists. Features of transients... can be predicted by NR and searched for... or found in the data and interpreted by NR and theory. Burst searches have non-gaussian tails... models can be used to suppress the background at the cost of some loss of generality. Burst group will go down this way as the next step. Position reconstruction error boxes will be from hundreds to few square degrees for GW detections depending on SNR and operating detector network. At the "Discovery" era it will be huge as it is expected that we will only have two detectors. ---- BREAK ---- Sergei made the case that cWB is better than most an flexible to include full or partial signal models. See slides... Carl analyzed Fisher Matrix parameter estimation performance in context. See slides... MCMC can also do non-triangulating sky localization fast. Stefan reviewed the predictions and analyses on the achievable sensitivity of 3rd and 4th generation GW detectors. See slides... promising! What is the best frequency sensitivty tuning for Burst detection and parameter estimation? What is the calibration accuracy do you need to realize science, parameter estimation, and analysis based on the network existence? Sam updated us on the LISA tragedy. back to square one... new teams, new start... lower limit 2025... Trade ET for LISA... same time scale same cost...? No consensus. Both are in concept stage, LISA is more advanced technologically. One more hope for GW detection according to Sam: Pulsar timing arrays to find GWs. Diverse sources that are complementary for LIGO, LISA... typically supermassive black holes. Event rates are realistic, typically in the <1/y range. The confusion limit is intuitively understood, however we need more effort to define it properly and precisely. Prioritization FOM and strategies determine capabilities... being investigated... see slides. Sam analyzed where and how to install and orient LIGO India for optimality... depend on the desired goal... what to optimize for. Choice does matter.