New species and descriptions of Lepidostomatidae (Trichoptera) from Sulawesi

Four new species of Lepidostoma from Sulawesi of the caddisfly family Lepidostomatidae are described. The three lepidostomatid species previously known from Sulawesi (Neboiss 1991) are removed from Goerodes and transferred to Lepidostoma. Also, the female of Lepidostoma xylochos (Neboiss) is described for the first time

A review of the Lepidostomatidae (Trichoptera) of Borneo

A review of the Lepidostomatidae of Borneo is provided with descriptions and illustrations of 19 species, including 14 new species: Dinarthrum bidentatum, D. kellyi, D. tridentatum, Lepidostoma bisculum, L. corollatum, L. cratis, L. curtipendulum, L. erectum, L. octolobium, L. oreion, L. pendulum, L. quaternarium, L. tenellum, and L. uncinatum. The five lepidostomatid species previously known from Borneo are removed from the genus Goerodes: four species, G. conjunctus (Banks), G. grandis (Banks), G. medius (Banks) and G. dulitensis Mosely, are transferred to the genus Lepidostoma, and one species, Goerodes capreolus Ito is transferred to Dinarthrum. Goerodes pendleburyi Weaver is recognized as a junior synonym of Lepidostoma dulitense (Mosely). One new species group for Dinarthrum and three new species groups for Lepidostoma are proposed. Keys to species for adult males are provided

Theoretical habitat templets, species traits, and species richness: Trichoptera in the Upper Rhone River and its floodplain

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All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems

International audienceRapidly spinning neutron stars are promising sources of continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter under extreme conditions. A significant fraction of the known pulsar population belongs to binary systems. Searching for unknown neutron stars in binary systems requires specialized algorithms to address unknown orbital frequency modulations. We present a search for continuous gravitational waves emitted by neutron stars in binary systems in early data from the third observing run of the Advanced LIGO and Advanced Virgo detectors using the semicoherent, GPU-accelerated, binaryskyhough pipeline. The search analyzes the most sensitive frequency band of the LIGO detectors, 50–300 Hz. Binary orbital parameters are split into four regions, comprising orbital periods of three to 45 days and projected semimajor axes of two to 40 light seconds. No detections are reported. We estimate the sensitivity of the search using simulated continuous wave signals, achieving the most sensitive results to date across the analyzed parameter space

Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run

International audienceWe search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O3a, the first half of their third observing run. We study: (1) the expected rate of lensing at current detector sensitivity and the implications of a non-observation of strong lensing or a stochastic gravitational-wave background on the merger-rate density at high redshift; (2) how the interpretation of individual high-mass events would change if they were found to be lensed; (3) the possibility of multiple images due to strong lensing by galaxies or galaxy clusters; and (4) possible wave-optics effects due to point-mass microlenses. Several pairs of signals in the multiple-image analysis show similar parameters and, in this sense, are nominally consistent with the strong lensing hypothesis. However, taking into account population priors, selection effects, and the prior odds against lensing, these events do not provide sufficient evidence for lensing. Overall, we find no compelling evidence for lensing in the observed gravitational-wave signals from any of these analyses