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<ri:Resource created="2019-11-11T08:24:16Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Transient processing and analysis using AMPEL</title><shortName>J/A+A/631/A147</shortName><identifier>ivo://CDS.VizieR/J/A+A/631/A147</identifier><altIdentifier>doi:10.26093/cds/vizier.36310147</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Nordin J.</name></creator><creator><name>Brinnel V.</name></creator><creator><name>van Santen J.</name></creator><creator><name>Bulla M.</name></creator><creator><name>Feindt U.</name></creator><creator><name>Franckowiak A.,Fremling C.</name></creator><creator><name>Gal-Yam A.</name></creator><creator><name>Giomi M.</name></creator><creator><name>Kowalski M.</name></creator><creator><name>Mahabal A.</name></creator><creator><name>Miranda N.,Rauch L.</name></creator><creator><name>Reusch S.</name></creator><creator><name>Rigault M.</name></creator><creator><name>Schulze S.</name></creator><creator><name>Sollerman J.</name></creator><creator><name>Stein R.,Yaron O.</name></creator><creator><name>van Velzen S.</name></creator><creator><name>Ward C.</name></creator><date role="Updated">2021-02-03T13:57:15Z</date><date role="Created">2019-11-11T08:24:16Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>supernovae</subject><subject>redshifted</subject><description>Both multi-messenger astronomy and new high-throughput wide-field surveys require flexible tools for the selection and analysis of astrophysical transients. Here we introduce the alert management, photometry, and evaluation of light curves (AMPEL) system, an analysis framework designed for high-throughput surveys and suited for streamed data. AMPEL combines the functionality of an alert broker with a generic framework capable of hosting user-contributed code; it encourages provenance and keeps track of the varying information states that a transient displays. The latter concept includes information gathered over time and data policies such as access or calibration levels. We describe a novel ongoing real-time multi-messenger analysis using AMPEL to combine IceCube neutrino data with the alert streams of the Zwicky Transient Facility (ZTF). We also reprocess the first four months of ZTF public alerts, and compare the yields of more than 200 different transient selection functions to quantify efficiencies for selecting Type Ia supernovae that were reported to the Transient Name Server (TNS). We highlight three channels suitable for (1) the collection of a complete sample of extragalactic transients, (2) immediate follow-up of nearby transients, and (3) follow-up campaigns targeting young, extragalactic transients. We confirm ZTF completeness in that all TNS supernovae positioned on active CCD regions were detected. AMPEL can assist in filtering transients in real time, running alert reaction simulations, the reprocessing of full datasets as well as in the final scientific analysis of transient data. This is made possible by a novel way of capturing transient information through sequences of evolving states, and interfaces that allow new code to be natively applied to a full stream of alerts. This text also introduces a method by which users can design their own channels for inclusion in the AMPEL live instance that parses the ZTF stream and the real-time submission of high-quality extragalactic supernova candidates to the TNS.</description><source format="bibcode">2019A&amp;A...631A.147N</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/631/A147</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/631/A147</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/631/A147</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/631/A147</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/631/A147</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/631/A147</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/631/A147</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface></capability><capability standardID="ivo://ivoa.net/std/TAP#aux"><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://tapvizier.cds.unistra.fr/TAPVizieR/tap</accessURL></interface></capability><capability xsi:type="cs:ConeSearch" standardID="ivo://ivoa.net/std/ConeSearch"><description>Cone search capability for table J/A+A/631/A147/tablea1 (TNS SNe Ia June 5 to Sep 15, 2018)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/631/A147/tablea1?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/631/A147/tablea1?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/631/A147/tablea1?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>328.4039583</ra><dec>7.2350833</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/88 529 625 662 897 1704-1705 2101 2191 2354 2372 2396 2469 4251 4269 4763 4992 6062 6265 6581 7017 7197 8203 8269 8291 8381 8454 8512 8537 8550 8657-8658 8674 8773 8778 8957 9005 9029 9052 9067 9072 9141 9170 9178 9182 9205 9212 9223 9243 9282 9289 9386-9387 9454 9520 9529 9540 9608 9639 9644 9678 9726 9749 9759 9776 9793 9808 9811 9841 9852 9878 9971 10000 10044 10060 10074-10075 10092 10115 10159 10187 10210 10233 10253 10280 10322 10339 10360 10386 10514 10595 10619 10673 10728 10827 10913 10932 10981 11199 11223 11267 11297 11333 11441 11451 11505 11514 11548 11584 11614-11615 11619 11643 11649 11668 11670 11685 11795 11822 11848 12037 12041 12181 12194 12372 12394 12477 12506 12642 12646-12647 12714 12744 12771 13317 13326 13631 13832 13905 14507 14874 14973 15050 15054 15068 15070 15235 15244 15270 15299 15339 15970 15977 16060 16074 16079 16097 16141 16293 16561 16571 16613 16662 16733-16734 16781 16909 16916 16960 17048 17196 17267 17523 17589 17624 17658 17675 17727 17810 17924 17941 18019 18066 18119 18264 18269 18273 18313 18396 18451 18482 18552 18655 18748 18818 18843 18919 18922 19065 19107 19130 19189 19224 19293 19359 19362 19373 19379 19423 19447 19620 19622 19625 19690 19822 19873 20142 20223 20298 20306 20362 20436 20715 20865 21044 22588 22704 22921 23051 24849 25700 26422 26432 27145 27847 28014 28273 28657 30155 30881 31169 31351 31406 31513 31643 31656 31674 31914 32165 32380 32401 32422 32447 32456 32467 32486 32500 32520 32588 32614 32645 32849 33225 33293 33380 33982 34358 34764 34816 35001 35407 35638 35736 36249 36625 36656 36780 43932 44004 44046 44901 45471 45786 46022 46034 46467 46653 46926 47039 47397 47420 47425 47484 47604 48128 48161 48184 48245 48315 48358 48545 48601 48944 49005 49025</spatial><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/631/A147?format=ascii</footprint></coverage><tableset><schema><name>default</name><table><name>J/A+A/631/A147/tablea1</name><description>TNS SNe Ia June 5 to Sep 15, 2018</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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