{"id":"https://openalex.org/W3104086372","doi":null,"title":"1 Non-expanding impulsive gravitational waves","display_name":"1 Non-expanding impulsive gravitational waves","publication_year":null,"publication_date":null,"ids":{"openalex":"https://openalex.org/W3104086372","mag":"3104086372"},"language":"en","primary_location":{"id":"pmh:oai:CiteSeerX.psu:10.1.1.340.237","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.340.237","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/gr-qc/9807081v1.pdf","raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory","score":0.9541000127792358,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory","score":0.9541000127792358,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories","score":0.01769999973475933,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13080","display_name":"Advanced Differential Geometry Research","score":0.00860000029206276,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/impulsive-gravitational-waves","display_name":"impulsive gravitational waves","score":0.9990000128746033},{"id":"https://openalex.org/keywords/pp-waves","display_name":"pp-waves","score":0.8830000162124634},{"id":"https://openalex.org/keywords/de-sitter-space","display_name":"de Sitter space","score":0.8169999718666077},{"id":"https://openalex.org/keywords/anti-de-sitter-space","display_name":"anti-de Sitter space","score":0.9959999918937683},{"id":"https://openalex.org/keywords/minkowski-space","display_name":"Minkowski space","score":0.953000009059906},{"id":"https://openalex.org/keywords/cosmological-constant","display_name":"cosmological constant","score":0.8109999895095825},{"id":"https://openalex.org/keywords/vacuum-einstein-equations","display_name":"vacuum Einstein equations","score":0.6480000019073486}],"concepts":[{"id":"https://openalex.org/C79464548","wikidata":"https://www.wikidata.org/wiki/Q464794","display_name":"Minkowski space","level":2,"score":0.8636999726295471},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7512000203132629},{"id":"https://openalex.org/C190330329","wikidata":"https://www.wikidata.org/wiki/Q190035","display_name":"Gravitational wave","level":2,"score":0.7150999903678894},{"id":"https://openalex.org/C2777299769","wikidata":"https://www.wikidata.org/wiki/Q3707858","display_name":"Type (biology)","level":2,"score":0.5203999876976013},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5042999982833862},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.49380001425743103},{"id":"https://openalex.org/C130187892","wikidata":"https://www.wikidata.org/wiki/Q133327","display_name":"Spacetime","level":2,"score":0.48899999260902405},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.4327999949455261},{"id":"https://openalex.org/C146846114","wikidata":"https://www.wikidata.org/wiki/Q901448","display_name":"Einstein","level":2,"score":0.4081000089645386},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.39649999141693115},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.3716999888420105},{"id":"https://openalex.org/C2778572836","wikidata":"https://www.wikidata.org/wiki/Q380933","display_name":"Space (punctuation)","level":2,"score":0.3562999963760376},{"id":"https://openalex.org/C96402334","wikidata":"https://www.wikidata.org/wiki/Q3030793","display_name":"Space time","level":2,"score":0.3553999960422516},{"id":"https://openalex.org/C71976986","wikidata":"https://www.wikidata.org/wiki/Q30006","display_name":"Gravitational acceleration","level":3,"score":0.31839999556541443},{"id":"https://openalex.org/C124017977","wikidata":"https://www.wikidata.org/wiki/Q11412","display_name":"Gravitation","level":2,"score":0.302700012922287},{"id":"https://openalex.org/C166861157","wikidata":"https://www.wikidata.org/wiki/Q59151","display_name":"Cosmological constant","level":2,"score":0.2978000044822693},{"id":"https://openalex.org/C19262093","wikidata":"https://www.wikidata.org/wiki/Q3036474","display_name":"De Sitter universe","level":3,"score":0.26170000433921814},{"id":"https://openalex.org/C14257148","wikidata":"https://www.wikidata.org/wiki/Q558066","display_name":"Gravitational field","level":2,"score":0.25519999861717224},{"id":"https://openalex.org/C117896860","wikidata":"https://www.wikidata.org/wiki/Q11376","display_name":"Acceleration","level":2,"score":0.2540000081062317},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2522999942302704}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:CiteSeerX.psu:10.1.1.340.237","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.340.237","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://arxiv.org/pdf/gr-qc/9807081v1.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2154921845","https://openalex.org/W2034610580","https://openalex.org/W2108891231","https://openalex.org/W7097785968","https://openalex.org/W1538062905","https://openalex.org/W2163135634","https://openalex.org/W1508844925","https://openalex.org/W2042820120","https://openalex.org/W7135538934","https://openalex.org/W7095624143"],"abstract_inverted_index":{"We":[0,47],"investigate":[1],"a":[2,43],"class":[3,30],"of":[4,27,32,38,54,73],"impulsive":[5,25,61,87,96],"gravitational":[6],"waves":[7,21,53],"which":[8,75,98],"propagate":[9],"either":[10],"in":[11,14,57],"Minkowski":[12,58],"or":[13],"the":[15,28,50,70],"(anti\u2013)":[16],"de":[17],"Sitter":[18],"background.":[19],"These":[20],"are":[22,60,76,82],"constructed":[23],"as":[24],"members":[26],"Kundt":[29],"P(\u039b)":[31],"non-twisting,":[33],"non-expanding":[34],"type":[35,56],"N":[36],"solutions":[37,97],"vacuum":[39],"Einstein":[40],"equations":[41],"with":[42],"cosmological":[44],"constant":[45],"\u039b.":[46],"show":[48],"that":[49,69],"only":[51],"non-trivial":[52],"this":[55],"spacetime":[59],"pp-waves.":[62],"For":[63],"\u039b":[64],"=":[65],"0":[66],"we":[67,90],"demonstrate":[68],"canonical":[71],"subclasses":[72],"P(\u039b),":[74],"invariantly":[77],"different":[78],"for":[79,86,94],"smooth":[80],"profiles,":[81],"all":[83],"locally":[84],"equivalent":[85],"profiles.":[88],"Also,":[89],"present":[91],"coordinate":[92],"system":[93],"these":[95],"is":[99],"explicitly":[100],"continuous.":[101]},"counts_by_year":[],"updated_date":"2026-11-12T12:28:57.059296","created_date":"2025-10-27T00:00:00"}
