<> <http://www.w3.org/2000/01/rdf-schema#comment> "The repository administrator has not yet configured an RDF license."^^<http://www.w3.org/2001/XMLSchema#string> .
<> <http://xmlns.com/foaf/0.1/primaryTopic> <https://discovery.ucl.ac.uk/id/eprint/1386976> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/AcademicArticle> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/Article> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/title> "A time-variable, phase-dependent emission line in the X-ray spectrum of the isolated neutron star RX J0822-4300"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/abstract> "RX J0822-4300 is the central compact object associated with the Puppis A supernova remnant. Previous X-ray observations suggested RX J0822-4300 to be a young neutron star with a weak dipole field and a peculiar surface temperature distribution dominated by two antipodal spots with different temperatures and sizes. An emission line at 0.8 keV was also detected. We performed a very deep (130-ks) observation with XMM-Newton, which allowed us to study in detail the phase-resolved properties of RX J0822-4300. Our new data confirm the existence of a narrow spectral feature, best modelled as an emission line, only seen in the 'soft'-phase interval - when the cooler region is best aligned to the line of sight. Surprisingly, comparison of our recent observations to the older ones yields evidence for a variation in the emission-line component, which can be modelled as a decrease in the central energy from ˜0.80 keV in 2001 to ˜0.73 keV in 2009-10. The line could be generated via cyclotron scattering of thermal photons in an optically-thin layer of gas, or, alternatively, it could originate in low-rate accretion by a debris disc. In any case, a variation in energy, pointing to a variation of the magnetic field in the line-emitting region, cannot be easily accounted for."^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/date> "2012-03" .
<https://discovery.ucl.ac.uk/id/document/42093> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/Document> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/volume> "421," .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/issue> "1" .
<https://discovery.ucl.ac.uk/id/org/ext-69575aab272d692ae22e92dad044c2a2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Organization> .
<https://discovery.ucl.ac.uk/id/org/ext-69575aab272d692ae22e92dad044c2a2> <http://xmlns.com/foaf/0.1/name> "WILEY"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/publisher> <https://discovery.ucl.ac.uk/id/org/ext-69575aab272d692ae22e92dad044c2a2> .
<https://discovery.ucl.ac.uk/id/publication/ext-64701df9a6e9c91a33147899415023b5> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/Collection> .
<https://discovery.ucl.ac.uk/id/publication/ext-64701df9a6e9c91a33147899415023b5> <http://xmlns.com/foaf/0.1/name> "Monthly Notices of the Royal Astronomical Society: Letters"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/isPartOf> <https://discovery.ucl.ac.uk/id/publication/ext-64701df9a6e9c91a33147899415023b5> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/status> <http://purl.org/ontology/bibo/status/published> .
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<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_1> <https://discovery.ucl.ac.uk/id/person/ext-9b66f4c7f0ef3b54e766d1df3e947096> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-9209d184be5a1a8b44ad1a19d3d87522> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_2> <https://discovery.ucl.ac.uk/id/person/ext-9209d184be5a1a8b44ad1a19d3d87522> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-009e1fdcca78d755f2de710b36f05bc8> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_3> <https://discovery.ucl.ac.uk/id/person/ext-009e1fdcca78d755f2de710b36f05bc8> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-1815f14fc8ef9f3fbe72fb4b092bddab> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_4> <https://discovery.ucl.ac.uk/id/person/ext-1815f14fc8ef9f3fbe72fb4b092bddab> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-e7b23bcdaefba477fb58f3db1afcb937> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_5> <https://discovery.ucl.ac.uk/id/person/ext-e7b23bcdaefba477fb58f3db1afcb937> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-7bef476053dd403cefe8cf1e511b4e64> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_6> <https://discovery.ucl.ac.uk/id/person/ext-7bef476053dd403cefe8cf1e511b4e64> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-8ad6898e6337d0819e68c5ae7c7faa65> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_7> <https://discovery.ucl.ac.uk/id/person/ext-8ad6898e6337d0819e68c5ae7c7faa65> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-3795bcce6464955a8917657258f49ab5> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_8> <https://discovery.ucl.ac.uk/id/person/ext-3795bcce6464955a8917657258f49ab5> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-3e5f7487547a09e2d9072bf8aeeed774> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_9> <https://discovery.ucl.ac.uk/id/person/ext-3e5f7487547a09e2d9072bf8aeeed774> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-323dbb2f914588ae070b4d298a614827> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_10> <https://discovery.ucl.ac.uk/id/person/ext-323dbb2f914588ae070b4d298a614827> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-0c2278965f68b17126c7e7645375f1d2> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_11> <https://discovery.ucl.ac.uk/id/person/ext-0c2278965f68b17126c7e7645375f1d2> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/dc/terms/creator> <https://discovery.ucl.ac.uk/id/person/ext-2c4a85b806ea757e8d2a1fb346265d1a> .
<https://discovery.ucl.ac.uk/id/eprint/1386976> <http://purl.org/ontology/bibo/authorList> <https://discovery.ucl.ac.uk/id/eprint/1386976#authors> .
<https://discovery.ucl.ac.uk/id/eprint/1386976#authors> <http://www.w3.org/1999/02/22-rdf-syntax-ns#_12> <https://discovery.ucl.ac.uk/id/person/ext-2c4a85b806ea757e8d2a1fb346265d1a> .
<https://discovery.ucl.ac.uk/id/person/ext-e7b23bcdaefba477fb58f3db1afcb937> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-e7b23bcdaefba477fb58f3db1afcb937> <http://xmlns.com/foaf/0.1/givenName> "A"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-e7b23bcdaefba477fb58f3db1afcb937> <http://xmlns.com/foaf/0.1/familyName> "Tiengo"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-e7b23bcdaefba477fb58f3db1afcb937> <http://xmlns.com/foaf/0.1/name> "A Tiengo"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-9209d184be5a1a8b44ad1a19d3d87522> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-9209d184be5a1a8b44ad1a19d3d87522> <http://xmlns.com/foaf/0.1/givenName> "D"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-9209d184be5a1a8b44ad1a19d3d87522> <http://xmlns.com/foaf/0.1/familyName> "Salvetti"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-9209d184be5a1a8b44ad1a19d3d87522> <http://xmlns.com/foaf/0.1/name> "D Salvetti"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-8ad6898e6337d0819e68c5ae7c7faa65> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-8ad6898e6337d0819e68c5ae7c7faa65> <http://xmlns.com/foaf/0.1/givenName> "R"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-8ad6898e6337d0819e68c5ae7c7faa65> <http://xmlns.com/foaf/0.1/familyName> "Turolla"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-8ad6898e6337d0819e68c5ae7c7faa65> <http://xmlns.com/foaf/0.1/name> "R Turolla"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-323dbb2f914588ae070b4d298a614827> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-323dbb2f914588ae070b4d298a614827> <http://xmlns.com/foaf/0.1/givenName> "P"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-323dbb2f914588ae070b4d298a614827> <http://xmlns.com/foaf/0.1/familyName> "Caraveo"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-323dbb2f914588ae070b4d298a614827> <http://xmlns.com/foaf/0.1/name> "P Caraveo"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-3795bcce6464955a8917657258f49ab5> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-3795bcce6464955a8917657258f49ab5> <http://xmlns.com/foaf/0.1/givenName> "F"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-3795bcce6464955a8917657258f49ab5> <http://xmlns.com/foaf/0.1/familyName> "Pizzolato"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-3795bcce6464955a8917657258f49ab5> <http://xmlns.com/foaf/0.1/name> "F Pizzolato"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-9b66f4c7f0ef3b54e766d1df3e947096> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-9b66f4c7f0ef3b54e766d1df3e947096> <http://xmlns.com/foaf/0.1/givenName> "A"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-9b66f4c7f0ef3b54e766d1df3e947096> <http://xmlns.com/foaf/0.1/familyName> "De Luca"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-9b66f4c7f0ef3b54e766d1df3e947096> <http://xmlns.com/foaf/0.1/name> "A De Luca"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-009e1fdcca78d755f2de710b36f05bc8> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-009e1fdcca78d755f2de710b36f05bc8> <http://xmlns.com/foaf/0.1/givenName> "A"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-009e1fdcca78d755f2de710b36f05bc8> <http://xmlns.com/foaf/0.1/familyName> "Sartori"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-009e1fdcca78d755f2de710b36f05bc8> <http://xmlns.com/foaf/0.1/name> "A Sartori"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-0c2278965f68b17126c7e7645375f1d2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-0c2278965f68b17126c7e7645375f1d2> <http://xmlns.com/foaf/0.1/givenName> "S"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-0c2278965f68b17126c7e7645375f1d2> <http://xmlns.com/foaf/0.1/familyName> "Mereghetti"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-0c2278965f68b17126c7e7645375f1d2> <http://xmlns.com/foaf/0.1/name> "S Mereghetti"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-3e5f7487547a09e2d9072bf8aeeed774> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-3e5f7487547a09e2d9072bf8aeeed774> <http://xmlns.com/foaf/0.1/givenName> "RP"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-3e5f7487547a09e2d9072bf8aeeed774> <http://xmlns.com/foaf/0.1/familyName> "Mignani"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-3e5f7487547a09e2d9072bf8aeeed774> <http://xmlns.com/foaf/0.1/name> "RP Mignani"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-1815f14fc8ef9f3fbe72fb4b092bddab> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-1815f14fc8ef9f3fbe72fb4b092bddab> <http://xmlns.com/foaf/0.1/givenName> "P"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-1815f14fc8ef9f3fbe72fb4b092bddab> <http://xmlns.com/foaf/0.1/familyName> "Esposito"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-1815f14fc8ef9f3fbe72fb4b092bddab> <http://xmlns.com/foaf/0.1/name> "P Esposito"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-7bef476053dd403cefe8cf1e511b4e64> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-7bef476053dd403cefe8cf1e511b4e64> <http://xmlns.com/foaf/0.1/givenName> "S"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-7bef476053dd403cefe8cf1e511b4e64> <http://xmlns.com/foaf/0.1/familyName> "Zane"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-7bef476053dd403cefe8cf1e511b4e64> <http://xmlns.com/foaf/0.1/name> "S Zane"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-2c4a85b806ea757e8d2a1fb346265d1a> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<https://discovery.ucl.ac.uk/id/person/ext-2c4a85b806ea757e8d2a1fb346265d1a> <http://xmlns.com/foaf/0.1/givenName> "GF"^^<http://www.w3.org/2001/XMLSchema#string> .
<https://discovery.ucl.ac.uk/id/person/ext-2c4a85b806ea757e8d2a1fb346265d1a> <http://xmlns.com/foaf/0.1/familyName> "Bignami"^^<http://www.w3.org/2001/XMLSchema#string> .
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