[R] s.e. of arima

[speretti]

Hi,

I'm using the function arima() from the ts package.
when  the function gives me the output I can see the s.e. of the
coefficients.
However I cannot find a way to collect them in a object

estimate<-arima(x, order=c(1,0,1))
estimate$se does not work

in fact str(estimate) does not contain $se.
How is it possible? The function compute and print that value but it is not
the resulting object?

Thank you

Sabrina
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