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31 results for “Siren”
Data release - A Standard Siren Cosmological Measurement from the Potential GW190521 Electromagnetic Counterpart ZTF19abanrhr
<p>Data release accompanying the manuscript</p> <p> "<strong>A Standard Siren Cosmological Measurement from the Potential GW190521 Electromagnetic Counterpart ZTF19abanrhr</strong>" - <a href="https://arxiv.org/abs/2009.14057">Chen et al. (2020)</a></p> <p>assuming an association between the LIGO-Virgo gravitational wave signal <a href="https://www.gw-openscience.org/eventapi/html/O3_Discovery_Papers/GW190521/">GW190521</a> and the electromagnetic signal ZTF19abanrhr as identified by <a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.124.251102">Graham et al 2020</a>.</p> <p>The posterior samples for the GW analyses are available from <a href="https://doi.org/10.5281/zenodo.4057130">Isi (2020)</a> and <a href="https://dcc.ligo.org/LIGO-P2000158/public">LVC (2020)</a> respectively.</p>
Hubble's Constant with GW170817 Standard Siren and GW190814 Dark Siren
<p>The local universe expansion rate is one of the most fundamental and essential cosmological parameters. This value which is known by the name of Hubble’s Constant is scientifically measured by electromagnetic sources called distance ladder. Surprisingly, using Gravitational Wave (GW) analysis this value can be measured making GW sources another significant method to act as standard sirens with their electromagnetic counterparts from their host galaxy. The gravitational wave event GW 170817 was the outcome of the merger of two different neutron stars. The electromagnetic event was recorded from the host galaxy NGC4993. The GW170817 has been a considerable success in this direction measuring the value of universe acceleration H0 = 70.0+12.0 −8.0 kms−1 Mpc−1. Another event in this series GW190817 is Compact Binary Coalescence involving a 22.2 – 24.3 The EM counterpart of this event is unknown so far and hence the event is named Dark Siren.The Hubble’s value proposed with this even is close to H0 = 75+59 −13 km s−1Mpc−1 .The source GW190814 which involves a massive black hole and the other compact object as the lightest black hole or the heaviest neutron star was localized to 18.5 deg2 at a distance of Mpc.</p>
Figure of a Mourning Siren
Hellenistic figure of a mourning siren thought to represent a fragment of a larger funerary architectural element. This figure, measuring 7.3 x 7.1 x 4.9 cm, was carved from limestone and painted in color, the pigments of which are still traceable via various forms of technical analysis. Yale University Art Gallery, Ancient Art Collection, Catalog No. [2001.28.11](https://artgallery.yale.edu/collections/objects/77886) [Preliminary 3D color interpretation](https://skfb.ly/6FXu7) featured in the installation *Seeing Blue in the Ancient World* in the exhibit *Sights and Sounds of Ancient Ritual* at the Yale University Art Gallery 9 November 2018 - 3 March 2019. Scanned and processed by Yale Institute for the Preservation of Cultural Heritage Digital Imaging Specialist Chelsea Alene Graham and Yale University Art Gallery Conservation Assistant III Andrés Garcés using Artec Space Spider and Artec Studio Professional in 2018. Geometry uploaded at 0.3 mm resolution. Source: Objaverse 1.0 / Sketchfab
Ulysses And The Sirens relief scan
Ulysses And The Sirens ,i made it in 2014 with cernit clay,and is around 10x15 cm .Based on ancient greek vase drawing. Scanned with 3df zephyr free. Source: Objaverse 1.0 / Sketchfab
Data from: Using drones and sirens to elicit avoidance behaviour in white rhinoceros as an anti-poaching tactic
Poaching fuelled by international trade in horn caused the deaths of over 1000 African rhinoceros (Ceratotherium simum and Diceros bicornis) per year between 2013 and 2017. Deterrents, which act to establish avoidance behaviours in animals, have the potential to aid anti-poaching efforts by moving at-risk rhinos away from areas of danger (e.g. near perimeter fences). To evaluate the efficacy of deterrents, we exposed a population of southern white rhinos (C. simum simum) to acoustic- (honeybee, siren, turtledove), olfactory- (chilli, sunflower) and drone-based stimuli on a game reserve in South Africa. We exposed rhinos to each stimulus up to four times. Stimuli were considered effective deterrents if they repeatedly elicited avoidance behaviour (locomotion away from the deterrent). Rhinos travelled significantly further in response to the siren than to the honeybee or turtledove stimulus, and to low altitude drone flights than to higher altitude flights. We found the drone to be superior at manipulating rhino movement than the siren due to its longer transmission range and capability of pursuit. In contrast, the scent stimuli were ineffective at inciting avoidance behaviour. Our findings indicate that deterrents are a prospective low-cost and in situ method to manage rhino movement in game reserves.
FIGURE 13. A in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 13. A comparison of larval and juvenile sirens. A Larval lineage B Siren intermedia from Escambia Co., Florida. B Larval S. lacertina from Jefferson Co., Florida (UF Herp 188601). C Larval lineage A S. intermedia from Liberty Co., Florida, that is slightly farther along in development than UF Herp 188601. D Larval Pseudobranchus striatus spheniscus from Jefferson Co., Florida (UF Herp 188600). E Juvenile S. sphagnicola (~3 cm TL) from Okaloosa Co., Florida, no voucher. F Juvenile S. lacertina from Walton Co., Florida (UF Herp 188739). G Juvenile lineage B S. intermedia from Washington Co., Florida (UF Herp 188735). H Head of a juvenile S. sphagnicola from Okaloosa Co., Florida (UF Herp 185068. I Juvenile lineage B S. intermedia from Escambia Co., Florida (UF Herp 185073 & UF Herp 185074).
FIGURE 10 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 10. Live Siren intermedia specimens belonging to mtDNA lineages B and C. A Lineage C from Berkeley Co., South Carolina (UF Herp 188612). B Lineage C from Berkeley Co., South Carolina (UF Herp 188613). C Lineage B from Holmes Co., Florida (UF Herp 188769). D Lineage B from Jackson Co., Florida (UF Herp 188901). E Head of lineage B specimen from Holmes Co., Florida (UF Herp 188769). F Head of lineage C specimen from Berkeley Co., South Carolina (UF Herp 188612) (lineage C). G Head of lineage C specimen from Berkeley Co., South Carolina (UF Herp 188613). The latter two specimens are from the same locality but differ dramatically in pattern and coloration.
FIGURE 8. A in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 8. A Subadult Siren lacertina from McIntosh Co., Georgia (UF Herp 190368). B Subadult S. lacertina from Alachua Co., Florida. C Large juvenile S. lacertina from Alachua Co., Florida. D Adult S. lacertina from Levy Co., Florida.
FIGURE 7 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 7. Live Siren intermedia type specimens belonging to mtDNA lineage A. A Neotype from Wayne Co., Georgia (UF Herp 190369). B Paratype from McIntosh Co., Georgia (UF Herp 189657). C Paratype from Nassau Co., Florida (UF Herp 188604). D Paratype from Nassau Co., Florida (UF Herp 188605). E Paratype from Wayne Co., Georgia (UF Herp 190370). F Paratype from Lake Co., Florida (UF Herp 186989).
FIGURE 6 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 6. Results from our linear discriminant function analysis based on the five size-corrected linear measurements taken from 396 Siren specimens. Except for S. reticulata, each lineage failed to create meaningful separation.
FIGURE 5 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 5. Box plots of the distributions of snout-vent length and the five size-corrected linear measurements compared using linear discriminant analysis.
FIGURE 9 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 9. Distribution map of specimens assigned to Siren intermedia (orange circles) and S. nettingi (blue circles). The red line is the eastern boundary of the Mobile drainage from EDNA Derived Watersheds for Major Named Rivers (https://edna. usgs.gov/watersheds/kml_index.htm). The Mobile drainage lacks S. intermedia records and is the easternmost drainage where S. nettingi occurs. Our westernmost records of S. intermedia are from the Escambia drainage.
FIGURE 12. Siren sphagnicola habitats. A in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 12. Siren sphagnicola habitats. A Type locality at Junior Walton Pond, Okaloosa Co., Florida, showing the feeding stream channel lined with thick muck and vegetation. B Type locality at Junior Walton Pond, Okaloosa Co., Florida, showing sphagnum mats and assorted vegetation covering a thick layer of muck and root masses. C Surface of a sphagnum bog on Bull Pen Branch, Okaloosa Co., Florida, where dense vegetation and 60 cm of muck provide ideal habitat for S. sphagnicola. D Seep at the head of Krul Lake, Santa Rosa Co., Florida, where shallow surface water flows over 15‒90 cm of fluid muck covered by grassy vegetation and sphagnum mats. E & F Hillside seepage pools along Carr Spring Branch, Okaloosa Co., Florida, where intermittent pools are deceptively deep and filled with fluid muck, like many other localities inhabited by S. sphagnicola.
FIGURE 4 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 4. Box plots with points representing specimens per showing distribution of costal groove counts of Siren lineages.
FIGURE 14 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 14. Distribution map of specimens assigned to Siren sphagnicola. Red triangles represent localities with museum voucher specimens. Species of these specimens were determined using sequence data if tissue samples were available or by comparing costal groove counts and patterns to data from sequenced specimens. The yellow triangle represents a locality with genetic data only.
FIGURE 2 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 2. Median joining networks of Siren haplotypes for RAG1 (left) and NCX1 (right) regions made using PopART.
FIGURE 3 in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 3. Box plots with points colored by sex showing distribution of tail proportions of Siren lineages. Outliers are noted with red triangles on the associated box plot.
FIGURE 11. Live Siren sphagnicola specimens. A in Unraveling Siren (Caudata: Sirenidae) systematics and description of a small seepage specialist
FIGURE 11. Live Siren sphagnicola specimens. A Holotype specimen from Okaloosa Co., Florida (UF Herp 185209). B Dorsal view of an adult found in shallow water where specimens were buried in the sandy bottom. C Dorsolateral view of an adult found in a deeper creek with deep muck deposits where specimens were found by digging through sphagnum root masses and fluid muck. D Juvenile from a shallow, sand-bottomed creek. E Adult hypertrophic male with a partially regenerated tail.
FIG. 1 in Effect of Season on Analysis of Growth in a Population of the Western Lesser Siren, Siren intermedia nettingi, in Northwestern Louisiana
FIG. 1. First season capture SVL (mm) frequency (n ¼ 881) for all individuals of Siren intermedia over the seven years of the study (1992– 1998).
FIG. 2 in Effect of Season on Analysis of Growth in a Population of the Western Lesser Siren, Siren intermedia nettingi, in Northwestern Louisiana
FIG. 2. Graph of interaction among years, seasons, and sex on growth in mass of Siren intermedia as calculated by increase in g per day. See Table 3 for statistics.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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