Holonomy Transformation in the FRW Metric

In this work we investigate loop variables in Friedman-Robertson-Walker spacetime. We analyze the parallel transport of vectors and spinors in several paths in this spacetime in order to classify its global properties. The band holonomy invariance is analysed in this background.Comment: 8 page

Open data from the third observing run of LIGO, Virgo, KAGRA, and GEO

The global network of gravitational-wave observatories now includes five detectors, namely LIGO Hanford, LIGO Livingston, Virgo, KAGRA, and GEO 600. These detectors collected data during their third observing run, O3, composed of three phases: O3a starting in 2019 April and lasting six months, O3b starting in 2019 November and lasting five months, and O3GK starting in 2020 April and lasting two weeks. In this paper we describe these data and various other science products that can be freely accessed through the Gravitational Wave Open Science Center at https://gwosc.org. The main data set, consisting of the gravitational-wave strain time series that contains the astrophysical signals, is released together with supporting data useful for their analysis and documentation, tutorials, as well as analysis software packages

Search for gravitational-wave transients associated with magnetar bursts in advanced LIGO and advanced Virgo data from the third observing run

Gravitational waves are expected to be produced from neutron star oscillations associated with magnetar giant f lares and short bursts. We present the results of a search for short-duration (milliseconds to seconds) and longduration (∼100 s) transient gravitational waves from 13 magnetar short bursts observed during Advanced LIGO, Advanced Virgo, and KAGRA’s third observation run. These 13 bursts come from two magnetars, SGR1935 +2154 and SwiftJ1818.0−1607. We also include three other electromagnetic burst events detected by FermiGBM which were identified as likely coming from one or more magnetars, but they have no association with a known magnetar. No magnetar giant flares were detected during the analysis period. We find no evidence of gravitational waves associated with any of these 16 bursts. We place upper limits on the rms of the integrated incident gravitational-wave strain that reach 3.6 × 10−²³ Hz at 100 Hz for the short-duration search and 1.1 ×10−²² Hz at 450 Hz for the long-duration search. For a ringdown signal at 1590 Hz targeted by the short-duration search the limit is set to 2.3 × 10−²² Hz. Using the estimated distance to each magnetar, we derive upper limits upper limits on the emitted gravitational-wave energy of 1.5 × 1044 erg (1.0 × 1044 erg) for SGR 1935+2154 and 9.4 × 10^43 erg (1.3 × 1044 erg) for Swift J1818.0−1607, for the short-duration (long-duration) search. Assuming isotropic emission of electromagnetic radiation of the burst fluences, we constrain the ratio of gravitational-wave energy to electromagnetic energy for bursts from SGR 1935+2154 with the available fluence information. The lowest of these ratios is 4.5 × 103

Reproduction Of Tropidurus Montanus Rodrigues, 1987 (tropiduridae), A Lizard From A Seasonal Habitat Of South-eastern Brazil, And A Comparison With Other Tropidurus Species

The reproductive and fat body cycles of the lizard Tropidurus montanus (Tropiduridae) were studied in a seasonal, open habitat at Minas Gerais State, south-eastern Brazil. Lizards were sampled monthly from June 1996 to June 1997. Reproductive females were found from August to January. The smallest reproductive female was 56.5 mm in body size, and was collected in December. Mean clutch size (±1SD), based on counts of eggs or follicles, was 3.48±1.15, and was significantly related to female body size. Reproductive males were found throughout the year, but their frequency of occurrence varied greatly between months. The smallest reproductive male had a SVL of 60.6 mm, and was collected in August. 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BrasíliaGaldino, C.A.B., (2000) Ciclo Reprodutivo do Lagarto Tropidurus nanuzae Rodrigues 1981 (Tropiduridae) em uma Área de Campo Rupestre em Minas Gerais, p. 44. , Unpubl. Master Dissert., UERJ, Rio de JaneiroGiullietti, A.M., Menezes, N.L., Pirani, J.B., Meguro, M., Wanderley, M.G.L., Flora da Serra do Cipó, Minas Gerais: Caracterização e lista das espécies (1987) Boletim de Botânica, Univ. de São Paulo, 9, pp. 1-151Guillette L.J., Jr., Casas-Andreu, G., Seasonal variation in fat body weights of the Mexican high elevation lizard Sceloporus grammicus microlepidotus (1981) J. Herpetol., 15, pp. 363-366Guillette L.J., Jr., Sullivan, W.P., The reproductive and fat body cycle of the lizard, Sceloporus formosus (1985) J. Herpetol., 19, pp. 474-480Kiefer, M.C., (1998) Dieta, Modo de Forrageamento e Uso de Microhábitat em Duas Espécies Simpátricas de Tropidurus (Sauria, Tropiduridae) na Serra do Cipó, Minas Gerais, , Unpubl. MSc. 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