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  1. Article: Sediment fingerprinting as a tool to identify temporal and spatial variability of sediment sources and transport pathways in agricultural catchments

    Sherriff, Sophie C / Daire Ó hUallacháin / John S. Rowan / Owen Fenton / Phil Jordan

    Agriculture, ecosystems & environment. 2018 Nov. 15, v. 267

    2018  

    Abstract: Management strategies to reduce soil loss and sediment delivery from agricultural land requires an empirical understanding of sediment sources. Sediment fingerprinting is a technique to apportion sources to a downstream sediment sample which, when ... ...

    Abstract Management strategies to reduce soil loss and sediment delivery from agricultural land requires an empirical understanding of sediment sources. Sediment fingerprinting is a technique to apportion sources to a downstream sediment sample which, when applied at high spatial and temporal resolutions, can offer insights into catchment sediment dynamics. However, developing an over-arching tool can be hindered due to indeterminate interactions such as, for example, landuse, soil and geological conditions and multiple sediment source pressures. To address this, a multi-proxy sediment fingerprinting approach was used in three catchment observatories in Ireland, characterised and referred to by their predominant soil drainage and land use characteristics: poorly-drained grassland, well-drained arable and moderately-drained arable. Potential sediment source groups: channels, field topsoils, and roads, were sampled. Target sediment samples were collected from six sites within each catchment over approximately two-years from May 2012 to May 2014. Geochemical, mineral magnetic and radionuclide tracers were measured in source and target sediment samples and, following justified tracer selection, source proportions were estimated using an uncertainty inclusive un-mixing model. Overall, the poorly-, well- and moderately-drained catchments exported 828, 421 and 619 tonnes, respectively (36, 19 and 33 t km−2 yr-1). Estimated source contributions from channel, field topsoil and road groups were overall, 67%, 27% and 4% in the poorly-drained grassland, 53%, 24% and 24% in the well-drained arable and 9%, 82% and 8% in the moderately-drained arable catchment outlets. Sub-catchment source estimates were generally consistent with the catchment outlet over space and time. Short-term activation of previously unidentified transport pathways were detected, for example, field sources transported by the road network in the well-drained catchment. In catchments with high hydrological surface connectivity (moderate and poor soil drainage), exposed soils were most sensitive to soil erosion and sediment delivery. Where groundcover is maintained on these soils, sediment connectivity was diminished and flow energy is transferred to the stream network where channel bank erosion increased. In the well-drained arable catchment, sub-surface flow pathways dominated and consequently channel sources, broadly representative of subsoil characteristics, were the largest sediment source. Sediment connectivity contrasted in the studied agricultural catchments according to source availability, and erosion, transport and delivery processes. Effective sediment management strategies in intensive and intensifying agricultural catchments must consider sediment loss risk resulting from catchment specific sediment connectivity and emphasise mitigation strategies accordingly.
    Keywords agricultural land ; agricultural watersheds ; bank erosion ; drainage ; grasslands ; land use ; magnetism ; models ; risk ; roads ; sediments ; space and time ; streams ; subsurface flow ; subwatersheds ; topsoil ; tracer techniques ; uncertainty ; Ireland
    Language English
    Dates of publication 2018-1115
    Size p. 188-200.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 602345-9
    ISSN 1873-2305 ; 0167-8809
    ISSN (online) 1873-2305
    ISSN 0167-8809
    DOI 10.1016/j.agee.2018.08.023
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Selection of a network of large lakes and reservoirs suitable for global environmental change analysis using Earth Observation

    Politi, E / C.J. Merchant / J.S. Rowan / M.E.J. Cutler / S. MacCallum / T.P. Dawson

    International journal of remote sensing. 2016 July 2, v. 37, no. 13

    2016  

    Abstract: The GloboLakes project, a global observatory of lake responses to environmental change, aims to exploit current satellite missions and long remote-sensing archives to synoptically study multiple lake ecosystems, assess their current condition, ... ...

    Abstract The GloboLakes project, a global observatory of lake responses to environmental change, aims to exploit current satellite missions and long remote-sensing archives to synoptically study multiple lake ecosystems, assess their current condition, reconstruct past trends to system trajectories, and assess lake sensitivity to multiple drivers of change. Here we describe the selection protocol for including lakes in the global observatory based upon remote-sensing techniques and an initial pool of the largest 3721 lakes and reservoirs in the world, as listed in the Global Lakes and Wetlands Database. An 18-year-long archive of satellite data was used to create spatial and temporal filters for the identification of waterbodies that are appropriate for remote-sensing methods. Further criteria were applied and tested to ensure the candidate sites span a wide range of ecological settings and characteristics; a total 960 lakes, lagoons, and reservoirs were selected. The methodology proposed here is applicable to new generation satellites, such as the European Space Agency Sentinel-series.
    Keywords databases ; ecosystems ; global change ; lakes ; remote sensing ; satellites ; surface water ; wetlands
    Language English
    Dates of publication 2016-0702
    Size p. 3042-3060.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 1497529-4
    ISSN 1366-5901 ; 0143-1161
    ISSN (online) 1366-5901
    ISSN 0143-1161
    DOI 10.1080/01431161.2016.1192702
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Understanding soil erosion impacts in temperate agroecosystems

    C. Baxter / J. S. Rowan / B. M. McKenzie / R. Neilson

    Biogeosciences Discussions, Vol 10, Iss 4, Pp 7491-

    bridging the gap between geomorphology and soil ecology

    2013  Volume 7520

    Abstract: Soil is a key asset of natural capital, providing a myriad of goods and ecosystem services that sustain life through regulating, supporting and provisioning roles, delivered by chemical, physical and biological processes. One of the greatest threats to ... ...

    Abstract Soil is a key asset of natural capital, providing a myriad of goods and ecosystem services that sustain life through regulating, supporting and provisioning roles, delivered by chemical, physical and biological processes. One of the greatest threats to soil is accelerated erosion, which raises a natural process to unsustainable levels, and has downstream consequences (e.g. economic, environmental and social). Global intensification of agroecosystems is a major cause of soil erosion which, in light of predicted population growth and increased demand for food security, will continue or increase. Elevated erosion and transport is common in agroecosystems and presents a multi-disciplinary problem with direct physical impacts (e.g. soil loss), other less tangible impacts (e.g. loss of ecosystem productivity), and indirect downstream effects that necessitate an integrated approach to effectively address the problem. Climate is also likely to increase susceptibility of soil to erosion. Beyond physical response, the consequences of erosion on soil biota have hitherto been ignored, yet biota play a fundamental role in ecosystem service provision. To our knowledge few studies have addressed the gap between erosion and consequent impacts on soil biota. Transport and redistribution of soil biota by erosion is poorly understood, as is the concomitant impact on biodiversity and ability of soil to deliver the necessary range of ecosystem services to maintain function. To investigate impacts of erosion on soil biota a two-fold research approach is suggested. Physical processes involved in redistribution should be characterised and rates of transport and redistribution quantified. Similarly, cumulative and long-term impacts of biota erosion should be considered. Understanding these fundamental aspects will provide a basis upon which mitigation strategies can be considered.
    Keywords Geology ; QE1-996.5 ; Science ; Q ; DOAJ:Earth Sciences ; DOAJ:Earth and Environmental Sciences ; Biology (General) ; QH301-705.5 ; DOAJ:Biology ; DOAJ:Biology and Life Sciences ; Evolution ; QH359-425 ; Ecology ; QH540-549.5 ; Life ; QH501-531
    Subject code 550
    Language English
    Publishing date 2013-04-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Understanding soil erosion impacts in temperate agroecosystems

    C. Baxter / J. S. Rowan / B. M. McKenzie / R. Neilson

    Biogeosciences, Vol 10, Iss 11, Pp 7133-

    bridging the gap between geomorphology and soil ecology using nematodes as a model organism

    2013  Volume 7145

    Abstract: Soil is a key asset of natural capital, providing a myriad of goods and ecosystem services that sustain life through regulating, supporting and provisioning roles, delivered by chemical, physical and biological processes. One of the greatest threats to ... ...

    Abstract Soil is a key asset of natural capital, providing a myriad of goods and ecosystem services that sustain life through regulating, supporting and provisioning roles, delivered by chemical, physical and biological processes. One of the greatest threats to soil is accelerated erosion, which raises a natural process to unsustainable levels, and has downstream consequences (e.g.~economic, environmental and social). Global intensification of agroecosystems is a recognised major cause of soil erosion which, in light of predicted population growth and increased demand for food security, will continue or increase. Transport and redistribution of biota by soil erosion has hitherto been ignored and thus is poorly understood. With the move to sustainable intensification this is a key knowledge gap that needs to be addressed. Here we highlight the erosion-energy and effective-erosion-depth continuum in soils, differentiating between different forms of soil erosion, and argue that nematodes are an appropriate model taxa to investigate impacts of erosion on soil biota across scales. We review the different known mechanisms of soil erosion that impact on soil biota in general, and nematodes in particular, and highlight the few detailed studies, primarily from tropical regions, that have considered soil biota. Based on the limited literature and using nematodes as a model organism we outline future research priorities to initially address the important interrelationships between soil erosion processes and soil biota.
    Keywords Ecology ; QH540-549.5 ; Life ; QH501-531 ; Geology ; QE1-996.5
    Subject code 630
    Language English
    Publishing date 2013-11-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Identifying the controls of soil loss in agricultural catchments using ex situ turbidity-based suspended sediment monitoring

    S. C. Sherriff / J. S. Rowan / A. R. Melland / P. Jordan / O. Fenton / D. Ó'hUallacháin

    Hydrology and Earth System Sciences Discussions, Vol 12, Iss 3, Pp 2707-

    2015  Volume 2740

    Abstract: Soil erosion and suspended sediment (SS) pose risks to chemical and ecological water quality. Agricultural activities may accelerate erosional fluxes from bare, poached or compacted soils, and enhance connectivity through modified channels and artificial ...

    Abstract Soil erosion and suspended sediment (SS) pose risks to chemical and ecological water quality. Agricultural activities may accelerate erosional fluxes from bare, poached or compacted soils, and enhance connectivity through modified channels and artificial drainage networks. Storm-event fluxes dominate SS transport in agricultural catchments; therefore, high temporal-resolution monitoring approaches are required but can be expensive and technically challenging. Here, the performance of in situ turbidity-sensors, conventionally installed submerged at the river bankside, is compared with installations where river water is delivered to sensors ex situ, i.e. within instrument kiosks on the riverbank, at two experimental catchments (Grassland B and Arable B). Calibrated against storm-period depth-integrated SS data, both systems gave comparable results; using the ex situ and in situ methods respectively, total load at Grassland B was estimated at 128 ± 28 and 154 ± 35, and 225 ± 54 and 248 ± 52 t at Arable B. The absence of spurious turbidity peaks relating to bankside debris around the in situ sensor and its greater security, make the ex situ sensor more robust. The ex situ approach was then used to characterise SS dynamics and fluxes in five intensively managed agricultural catchments in Ireland which feature a range of landscape characteristics and land use pressures. Average annual suspended sediment concentration (SSC) was below the Freshwater Fish Directive (FFD) guideline of 25 mg L −1 , and the continuous hourly record demonstrated that exceedance occurred less than 12% of the observation year. Soil drainage class and proportion of arable land were key controls determining flux rates, but all catchments reported a high degree of inter-annual variability associated with variable precipitation patterns compared to the long-term average. Poorly-drained soils had greater sensitivity to runoff and soil erosion, particularly in catchments with periods of bare soils. Well drained soils were less sensitive to erosion even on arable land; however, under extreme rainfall conditions, all bare soils remain a high sediment loss risk. Analysis of storm-period and seasonal dynamics (over the long term) using high resolution monitoring would be beneficial to further explore the impact of landscape, climate and land use characteristics on SS export.
    Keywords Physical geography ; GB3-5030 ; Geography. Anthropology. Recreation ; G ; Environmental sciences ; GE1-350
    Language English
    Publishing date 2015-03-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Investigating suspended sediment dynamics in contrasting agricultural catchments using ex situ turbidity-based suspended sediment monitoring

    S. C. Sherriff / J. S. Rowan / A. R. Melland / P. Jordan / O. Fenton / D. Ó hUallacháin

    Hydrology and Earth System Sciences, Vol 19, Iss 8, Pp 3349-

    2015  Volume 3363

    Abstract: Soil erosion and suspended sediment (SS) pose risks to chemical and ecological water quality. Agricultural activities may accelerate erosional fluxes from bare, poached or compacted soils, and enhance connectivity through modified channels and artificial ...

    Abstract Soil erosion and suspended sediment (SS) pose risks to chemical and ecological water quality. Agricultural activities may accelerate erosional fluxes from bare, poached or compacted soils, and enhance connectivity through modified channels and artificial drainage networks. Storm-event fluxes dominate SS transport in agricultural catchments; therefore, high temporal-resolution monitoring approaches are required, but can be expensive and technically challenging. Here, the performance of in situ turbidity sensors, conventionally installed submerged at the river bankside, is compared with installations where river water is delivered to sensors ex situ, i.e. within instrument kiosks on the riverbank, at two experimental catchments (Grassland B and Arable B). The in situ and ex situ installations gave comparable results when calibrated against storm-period, depth-integrated SS data, with total loads at Grassland B estimated at 12 800 and 15 400 t, and 22 600 and 24 900 t at Arable B, respectively. The absence of spurious turbidity readings relating to bankside debris around the in situ sensor and its greater security make the ex situ sensor more robust. The ex situ approach was then used to characterise SS dynamics and fluxes in five intensively managed agricultural catchments in Ireland which feature a range of landscape characteristics and land use pressures. Average annual suspended sediment concentration (SSC) was below the Freshwater Fish Directive (78/659/EEC) guideline of 25 mg L −1 , and the continuous hourly record demonstrated that exceedance occurred less than 12 % of the observation year. Soil drainage class and proportion of arable land were key controls determining flux rates, but all catchments reported a high degree of inter-annual variability associated with variable precipitation patterns compared to the long-term average. Poorly drained soils had greater sensitivity to runoff and soil erosion, particularly in catchments with periods of bare soils. Well drained soils were less sensitive to erosion ...
    Keywords Technology ; T ; Environmental technology. Sanitary engineering ; TD1-1066 ; Geography. Anthropology. Recreation ; G ; Environmental sciences ; GE1-350
    Subject code 333 ; 550
    Language English
    Publishing date 2015-08-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: Microbial responses to the erosional redistribution of soil organic carbon in arable fields

    Dungait, Jennifer A.J / Blair M. McKenzie / Cathy Hawes / Claire Ghee / David W. Hopkins / Elizabeth R. Dixon / Eric Paterson / John S. Rowan

    Elsevier Ltd Soil biology & biochemistry. 2013 May, v. 60

    2013  

    Abstract: Quantifying the potential for eroding agricultural soils to act as sinks or sources of atmospheric carbon relies on accounting for the pools and fluxes of soil organic carbon (SOC) and nutrients, e.g. nitrogen (N), affected by erosion. Herein, we report ... ...

    Abstract Quantifying the potential for eroding agricultural soils to act as sinks or sources of atmospheric carbon relies on accounting for the pools and fluxes of soil organic carbon (SOC) and nutrients, e.g. nitrogen (N), affected by erosion. Herein, we report the outcomes of an experiment where a C4 maize (Zea mays) crop (δ13C = −12.1‰) was cultivated and incorporated for 2 years to introduce a ‘pulse’ of 13C-enriched SOC to a C3 arable soil (δ13C = −27.4‰). Soils were sampled at eroding (top slope and upper slope) and depositional (lower slope and slope foot) positions of an accelerated erosion pathway that were confirmed using 137Cs measurements. The sand particle-sized fraction (63–2000 μm) was predominant and increased in the depositional slope positions due to selective loss of fine particles and preferential deposition of the coarsest fraction of transported sediment. There was a significant isometric relationship between the percentage SOC and total N: top slope > upper slope > lower slope, with similar values in the slope foot to the top slope. The δ15N values of the soils were enriched (7.3‰) at the slope foot, compared with the other slope positions (average 6.3‰), suggesting increased denitrification rates. The δ13C values of the soil microbial biomass C extracted from surface soils (0–5 cm) at each slope position showed that the proportion of maize C being incorporated into the soil microbial biomass declined in the downslope direction from 54% (top slope) to 43% (upper slope) to 18% (lower slope) in inverse proportion to the size of the soil microbial biomass, and increased to 41% at the slope foot. This suggests dynamic replacement of the SOC with crop C in the eroding slope positions and dilution of the transported C by C3-SOC in the depositional slope positions. This paper is evidence that erosional distribution of soil carbon leads to differential microbial utilisation of SOC between eroding and depositional sites.
    Keywords accelerated erosion ; agricultural soils ; arable soils ; carbon ; corn ; denitrification ; microbial biomass ; nitrogen ; nitrogen content ; nutrients ; sand ; soil organic carbon ; Zea mays
    Language English
    Dates of publication 2013-05
    Size p. 195-201.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 280810-9
    ISSN 0038-0717
    ISSN 0038-0717
    DOI 10.1016/j.soilbio.2013.01.027
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Fingerprinting of bed sediment in the Tay Estuary, Scotland

    P. A. Jenkins / R. W. Duck / J. S. Rowan / J. Walden

    Hydrology and Earth System Sciences, Vol 6, Iss 6, Pp 1007-

    an environmental magnetism approach

    2002  Volume 1016

    Abstract: Sediment fingerprinting is commonly used for sediment provenance studies in lakes, rivers and reservoirs and on hillslopes and floodplains. This investigation explores the mixing of terrestrial and marine-derived sediment in the Tay Estuary, Scotland, ... ...

    Abstract Sediment fingerprinting is commonly used for sediment provenance studies in lakes, rivers and reservoirs and on hillslopes and floodplains. This investigation explores the mixing of terrestrial and marine-derived sediment in the Tay Estuary, Scotland, using mineral magnetic attributes for fingerprinting. Samples representative of the estuary sediments and of four sources (end-members) were subjected to a suite of magnetic susceptibility and remanence measurements. Sediment samples from the beds of the Rivers Tay and Earn represented fluvial inputs while samples from the Angus and Fife coasts represented marine input. Multivariate discriminant and factor analysis showed that the sources could be separated on the basis of six magnetic parameters in a simple multivariate unmixing model to identify source contributions to estuarine bed sediments. Multi-domain magnetite signatures, characteristic of unweathered bedrock, dominate the magnetic measurements. Overall contributions of 3% from the River Earn, 17% from the River Tay, 29% from the Angus coast and 51% from the Fife coast source end-members, demonstrated the present-day regime of marine sediment derivation in the Tay Estuary. However, this conceals considerable spatial variability both along-estuary and in terms of sub-environments, with small-scale variations in sediment provenance reflecting local morphology, particularly areas of channel convergence. Keywords: bed sediment, environmental magnetism, fingerprinting, Tay Estuary, Scotland
    Keywords Technology ; T ; Environmental technology. Sanitary engineering ; TD1-1066 ; Geography. Anthropology. Recreation ; G ; Environmental sciences ; GE1-350
    Language English
    Publishing date 2002-01-01T00:00:00Z
    Publisher Copernicus Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Catchment-scale deposition and redistribution of chernobyl radiocaesium in upland Britain

    D.L. Higgitt / J.S. Rowan / D.E. Walling

    Environment International, Vol 19, Iss 2, Pp 155-

    1993  Volume 166

    Abstract: Fallout from the Chernobyl nuclear accident in April 1986 resulted in a significant increase in the inventory of radiocaesium in many areas of upland Britain. Caesium-137 derived from nuclear weapons testing in the 1950s and 1960s has been widely used as ...

    Abstract Fallout from the Chernobyl nuclear accident in April 1986 resulted in a significant increase in the inventory of radiocaesium in many areas of upland Britain. Caesium-137 derived from nuclear weapons testing in the 1950s and 1960s has been widely used as a sediment tracer to monitor soil erosion. The presence of Chernobyl fallout provides an opportunity to examine the short-term, post-input behaviour of radiocaesium in upland soils and assess its potential for investigating sediment transfer in upland systems. Sampling undertaken in the catchment of Lake Vyrnwy, North Wales considered the vertical distribution of radiocaessium in different soil types, the catchment-wide variation in Chernobyl fallout deposition, and the radiocaesium content of sediment from a variety of slope and fluvial environments. Whilst uncertainty surroungding the estimation of baseline inventories limits the detailed interpretation of short-term sediment dynamics, it is apparent that the sediment-associated redistribution of Chernobyl radioactivity may result in its accumulation in certain parts of the catchment over longer timescales.
    Keywords Environmental sciences ; GE1-350
    Subject code 333
    Language English
    Publishing date 1993-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article: Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift During the LIGO-Virgo Run O3a

    Collaboration, The LIGO Scientific / R.Abbott, the Virgo Collaboration / T.D.Abbott, / S.Abraham, / F.Acernese, / K.Ackley, / C.Adams, / R.X.Adhikari, / V.B.Adya, / C.Affeldt, / M.Agathos, / K.Agatsuma, / N.Aggarwal, / O.D.Aguiar, / A.Aich, / L.Aiello, / A.Ain, / P.Ajith, / G.Allen, /
    A.Allocca, / P.A.Altin, / A.Amato, / S.Anand, / A.Ananyeva, / S.B.Anderson, / W.G.Anderson, / S.V.Angelova, / S.Ansoldi, / S.Antier, / S.Appert, / K.Arai, / M.C.Araya, / J.S.Areeda, / M.Arene, / N.Arnaud, / S.M.Aronson, / Y.Asali, / S.Ascenzi, / G.Ashton, / M.Assiduo, / S.M.Aston, / P.Astone, / F.Aubin, / P.Aufmuth, / K.AultONeal, / C.Austin, / V.Avendano, / S.Babak, / P.Bacon, / F.Badaracco, / M.K.M.Bader, / S.Bae, / A.M.Baer, / J.Baird, / F.Baldaccini, / G.Ballardin, / S.W.Ballmer, / A.Bals, / A.Balsamo, / G.Baltus, / S.Banagiri, / D.Bankar, / R.S.Bankar, / J.C.Barayoga, / C.Barbieri, / B.C.Barish, / D.Barker, / K.Barkett, / P.Barneo, / F.Barone, / B.Barr, / L.Barsotti, / M.Barsuglia, / D.Barta, / J.Bartlett, / I.Bartos, / R.Bassiri, / A.Basti, / M.Bawaj, / J.C.Bayley, / M.Bazzan, / B.B'ecsy, / M.Bejger, / I.Belahcene, / A.S.Bell, / D.Beniwal, / M.G.Benjamin, / J.D.Bentley, / F.Bergamin, / B.K.Berger, / G.Bergmann, / S.Bernuzzi, / C.P.L.Berry, / D.Bersanetti, / A.Bertolini, / J.Betzwieser, / R.Bhandare, / A.V.Bhandari, / A.Bianchi, / J.Bidler, / E.Biggs, / I.A.Bilenko, / G.Billingsley, / R.Birney, / O.Birnholtz, / S.Biscans, / M.Bischi, / S.Biscoveanu, / A.Bisht, / G.Bissenbayeva, / M.Bitossi, / M.A.Bizouard, / J.K.Blackburn, / J.Blackman, / C.D.Blair, / D.G.Blair, / R.M.Blair, / F.Bobba, / N.Bode, / M.Boer, / Y.Boetzel, / G.Bogaert, / F.Bondu, / E.Bonilla, / R.Bonnand, / P.Booker, / B.A.Boom, / R.Bork, / V.Boschi, / S.Bose, / V.Bossilkov, / J.Bosveld, / Y.Bouffanais, / A.Bozzi, / C.Bradaschia, / P.R.Brady, / A.Bramley, / M.Branchesi, / J.E.Brau, / M.Breschi, / T.Briant, / J.H.Briggs, / F.Brighenti, / A.Brillet, / M.Brinkmann, / P.Brockill, / A.F.Brooks, / J.Brooks, / D.D.Brown, / S.Brunett, / G.Bruno, / R.Bruntz, / A.Buikema, / T.Bulik, / H.J.Bulten, / A.Buonanno, / D.Buskulic, / R.L.Byer, / M.Cabero, / L.Cadonati, / G.Cagnoli, / C.Cahillane, / Bustillo, J.Calder'on / J.D.Callaghan, / T.A.Callister, / E.Calloni, / J.B.Camp, / M.Canepa, / Santoro, G.Caneva 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    Abstract: We search for gravitational-wave transients associated with gamma-ray bursts detected by the Fermi and Swift satellites during the first part of the third observing run of Advanced LIGO and Advanced Virgo (1 April 2019 15:00 UTC - 1 October 2019 15:00 ... ...

    Abstract We search for gravitational-wave transients associated with gamma-ray bursts detected by the Fermi and Swift satellites during the first part of the third observing run of Advanced LIGO and Advanced Virgo (1 April 2019 15:00 UTC - 1 October 2019 15:00 UTC). 105 gamma-ray bursts were analyzed using a search for generic gravitational-wave transients; 32 gamma-ray bursts were analyzed with a search that specifically targets neutron star binary mergers as short gamma-ray burst progenitors. We describe a method to calculate the probability that triggers from the binary merger targeted search are astrophysical and apply that method to the most significant gamma-ray bursts in that search. We find no significant evidence for gravitational-wave signals associated with the gamma-ray bursts that we followed up, nor for a population of unidentified subthreshold signals. We consider several source types and signal morphologies, and report for these lower bounds on the distance to each gamma-ray burst.
    Keywords covid19
    Publisher ArXiv
    Document type Article
    Database COVID19

    Kategorien

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