Searching for the r-modes in Fast Millisecond Pulsars

Neutron star observables influenced by rmode physics, such as their spin andthermal evolution, can potentially provide a unique window on their extremeinteriors. We propose to observe several fast spinning, but nonaccreting MSPs(PSRs J19025105 and J2043+1711) to constrain their core temperatures and rmodeamplitudes. Recent results suggest rmodes are present at very low levels insome of these objects. Either the modes are efficiently damped by an as yetundetermined mechanism, or current calculations of the rmode instability windowmay require substantial modification. Since both the instability window andsaturation mechanisms are sensitive to spin rates, our proposed observationswill provide clues to both of these possibilities. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]