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originally posted by: pauljs75
They'll need more gravity wave measurements though in order to get the data points needed to try something like that. But the fact they got a measurement is pretty cool.
the exercises can be valuable for rehearsing the analysis techniques that will be needed when a real event occurs. But the practice can also be a drain on the team’s energies. “Analysing one of these events can be enormously time consuming,” he says. “At some point, it damages their home life.”
The original blind-injection exercises took 18 months and 6 months respectively. The first one was discarded, but in the second case, the collaboration wrote a paper and held a vote to decide whether they would make an announcement. Only then did the blind-injection team ‘open the envelope’ and reveal that the events had been staged.
A team of three collaboration members has the ability to simulate a detection by using actuators to move the mirrors. “Only they know if, and when, a certain type of signal has been injected
originally posted by: ErosA433
a reply to: intergalactic fire
These injections have been performed through LIGO's operation, many many times, why bother faking one when you have already done many others?
It is a good exercise actually in de-sensitisation, get people used to seeing weird things in their data, and so when one of them is real, they are not gunning for the result, they are looking at it from the position of "Its probably not real"
What is it with the money and job security comments? Its pretty funny.
Why? Well ok lets look at the reality.
1) Cost of building it -
Hardware - Most of the hardware was bought from high tech-industry, thus taking the grants and injecting it into the economy, NOT into any single scientist.
Salary - Yes people need money to live, of the nearly 1000 people who do research in LIGO, 95% of them are students and post-docs, these people are not that well paid. In the UK the salary is NOT indicative of a high skilled job, even in the US it isn't all that well paid. Scientists are probably the least likely people to be able to afford nice cars, big houses, hell, most scientists even don't start families because they cant afford children
Security - The average PhD in the US is between 4 and 6 years depending on a few factors, most PhD students don't get handsome salaries, we are talking 12-15K a year, the rest has to be topped up through teaching... oh yeah and tuition isn't always covered by that amount either. Average work placement expectancy for a Post-doc is... 3-5 years in the US, before they are told to move on... if you are a post-doc older than 35, depending on the field of physics you are in, in the US often you are considered 'not good enough' if you haven't landed a faculty. So, out you go. Oh yeah and 80% of post-docs WONT become faculty no matter how good they are.
Sooooo yeah? Its not fantastic, its not like these people take home an easy salary and blow it all on opulence, they don't they work ridiculously long hours, in high stress conditions with a very very high probability of failure at the end of it... source? Yeah Im a physicist I know first hand.... soooo wanna get some reality into that brain?
originally posted by: BarefootInWinter
What shape is the wave? Not sure if that makes sense, but is it like say...the rings around Saturn if the flat disk expanded outward? Or is it more like a bubble expanding out from the event in all directions?