text: 192,64,1230103939506483205,127058544,Russell Smith,"New paper by @phdwcollier on searching for nearby lenses in new and archival data from MUSE: <LINK> @phdwcollier There's a couple of new z&lt;0.05 strong-lensing *clusters* (with lensing mass dominated by DM not stars). <LINK> @phdwcollier Among the field galaxies, the big find (J0403-0239) was summarised in Will's previous paper.   The new paper has some nice HST follow-up imaging and blue spectroscopy to address the age-vs-IMF degeneracy. <LINK> There are no more multiply-imaged sources among the sample, but quite a number of close-projected singly-imaged cases, which can add some information on the distribution of IMF variation. One of these has *three* singly-imaged background sources within 5 arcsec, at different redshifts, any which could have had detectable counter-images if the stellar M/L were high enough (i.e. IMF heavy enough). <LINK>",https://arxiv.org/abs/2002.07191v1,"Low-redshift strong-lensing galaxies can provide robust measurements of the stellar mass-to-light ratios in early-type galaxies (ETG), and hence constrain variations in the stellar initial mass function (IMF). At present, only a few such systems are known. Here, we report the first results from a blind search for gravitationally-lensed emission line sources behind 52 massive $z$ $<$ 0.07 ETGs with MUSE integral field spectroscopy. For 16 galaxies, new observations were acquired, whilst the other 36 were analysed from archival data. This project has previously yielded one confirmed galaxy-scale strong lens (J0403-0239) which we report in an earlier paper. J0403-0239 has since received follow-up observations, presented here, which indicate support for our earlier IMF results. Three cluster-scale, and hence dark-matter-dominated, lensing systems were also discovered (central galaxies of A4059, A2052 and AS555). For nine further galaxies, we detect a singly-imaged but closely-projected source within 6 arcsec (including one candidate with sources at three different redshifts); such cases can be exploited to derive upper limits on the IMF mass-excess factor, $\alpha$. Combining the new lens and new upper limits, with the previously-discovered systems, we infer an average $\langle \alpha \rangle$ = 1.06 $\pm$ 0.08 (marginalised over the intrinsic scatter), which is inconsistent with a Salpeter-like IMF ($\alpha$ = 1.55) at the 6$\sigma$ level. We test the detection threshold in these short-exposure MUSE observations with the injection and recovery of simulated sources, and predict that one in twenty-five observations is expected to yield a new strong-lens system. Our observational results are consistent with this expected yield. ",] MNELLS: The MUSE Nearby Early-Type Galaxy Lens Locator Survey,5,"['New paper by @phdwcollier on searching for nearby lenses in new and archival data from MUSE: <LINK>', ""@phdwcollier There's a couple of new z&lt;0.05 strong-lensing *clusters* (with lensing mass dominated by DM not stars). https://t.co/uNKFUpP7aq"", ""@phdwcollier Among the field galaxies, the big find (J0403-0239) was summarised in Will's previous paper.   \n\nThe new paper has some nice HST follow-up imaging and blue spectroscopy to address the age-vs-IMF degeneracy. https://t.co/z7YMZSQYzx"", 'There are no more multiply-imaged sources among the sample, but quite a number of close-projected singly-imaged cases, which can add some information on the distribution of IMF variation.', 'One of these has *three* singly-imaged background sources within 5 arcsec, at different redshifts, any which could have had detectable counter-images if the stellar M/L were high enough (i.e. IMF heavy enough). https://t.co/uGmAWLZN9C']",20,02,857