text: 325,3,913333810556792832,2427184074,Christopher Berry,"New @LIGO/@ego_virgo paper (not #GW170814), search for non-tensorial gravitational waves from pulsars <LINK> #nondetection <LINK> @LIGO @ego_virgo Continuous gravitational waves from rotating neutron stars give a better insight into #GravitaitonalWave polarizations than short signals @LIGO @ego_virgo As the Earth rotates, the position of the source relative to the detector changes, giving us a way to look for different polarizations @LIGO @ego_virgo How a detector responds to a polarization depends upon where the source is (we call this the antenna pattern) <LINK>",https://arxiv.org/abs/1709.09203,"We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously-published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity. ",First search for nontensorial gravitational waves from known pulsars,4,"['New @LIGO/@ego_virgo paper (not #GW170814), search for non-tensorial gravitational waves from pulsars <LINK> #nondetection <LINK>', '@LIGO @ego_virgo Continuous gravitational waves from rotating neutron stars give a better insight into #GravitaitonalWave polarizations than short signals', '@LIGO @ego_virgo As the Earth rotates, the position of the source relative to the detector changes, giving us a way to look for different polarizations', '@LIGO @ego_virgo How a detector responds to a polarization depends upon where the source is (we call this the antenna pattern) https://t.co/UxAPaS8jik']",17,09,570