J
Jari J. E. Kajava
Researcher at University of Turku
Publications - 90
Citations - 1918
Jari J. E. Kajava is an academic researcher from University of Turku. The author has contributed to research in topics: Neutron star & Black hole. The author has an hindex of 24, co-authored 76 publications receiving 1654 citations. Previous affiliations of Jari J. E. Kajava include Spanish National Research Council & University of Oulu.
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Proceedings ArticleDOI
XIPE: the x-ray imaging polarimetry explorer
P. Soffitta,R. Bellazzini,Enrico Bozzo,Vadim Burwitz,A. J. Castro-Tirado,Enrico Costa,T. J. L. Courvoisier,Hua Feng,Szymon Gburek,Rene W. Goosmann,Vladimir Karas,Giorgio Matt,Fabio Muleri,K. Nandra,Mark Pearce,Juri Poutanen,Victor Reglero,D. Sabau Maria,Andrea Santangelo,G. Tagliaferri,C. Tenzer,Jacco Vink,Martin C. Weisskopf,Silvia Zane,Ivan Agudo,Angelo Antonelli,Primo Attina,Luca Baldini,A. M. Bykov,Rita Carpentiero,E. Cavazzuti,E. M. Churazov,E. Del Monte,D. de Martino,I. Donnarumma,Victor Doroshenko,Y. Evangelista,Ivo Ferreira,Elena Gallo,Nicolas Grosso,P. Kaaret,E. Kuulkers,J. Laranaga,Luca Latronico,David H. Lumb,J. Macian,Julien Malzac,F. Marin,Enrico Massaro,M. Minuti,Carole Mundell,Jan-Uwe Ness,T. Oosterbroek,S. Paltani,G. Pareschi,Rosalba Perna,P.-O. Petrucci,H. B. Pinazo,M. Pinchera,J. P. Rodriguez,M. Roncadelli,A. Santovincenzo,S. Sazonov,Carmelo Sgrò,Daniele Spiga,J. Svoboda,Craig Theobald,T. Theodorou,Roberto Turolla,E. Wilhelmi De Ona,Berend Winter,A. M. Akbar,H. Allan,Roberto Aloisio,Diego Altamirano,Lorenzo Amati,Elena Amato,Emmanouil Angelakis,J. Arezu,J. L. Atteia,Magnus Axelsson,Matteo Bachetti,Lucía Ballo,Solen Balman,Rino Bandiera,Xavier Barcons,S. Basso,Altan Baykal,Werner Becker,Ehud Behar,Banafsheh Beheshtipour,R. Belmont,Edo Berger,Federico Bernardini,Stefano Bianchi,G. Bisnovatyi-Kogan,P. Blasi,Pere Blay,Arash Bodaghee,M. Boer,Markus Boettcher,Slavko Bogdanov,Ignazio Bombaci,R. Bonino,João Braga,W. N. Brandt,A. Brez,Niccolò Bucciantini,Luciano Burderi,Ilaria Caiazzo,Riccardo Campana,Sergio Campana,Fiamma Capitanio,M. Cappi,M. Cardillo,Piergiorgio Casella,O. Catmabacak,Bradley Cenko,Pablo Cerdá-Durán,C. Cerruti,Sylvain Chaty,Maxime Chauvin,Yi Chen,Jérôme Chenevez,Masha Chernyakova,C. C. Cheung Teddy,D. Christodoulou,P. H. Connell,R. Corbet,F. Coti Zelati,Stefano Covino,Wei Cui,Giancarlo Cusumano,Antonino D'Ai,F. D'Ammando,M. Dadina,Zhendong Dai,A. de Rosa,L. de Ruvo,Nathalie Degenaar,M. Del Santo,L. Del Zanna,Gulab C. Dewangan,S. Di Cosimo,N. Di Lalla,G. Di Persio,T. Di Salvo,T.H.V.T. Dias,Chris Done,Michal Dovciak,Gerardine Doyle,Lorenzo Ducci,Lorenzo Ducci,R. F. Elsner,Teruaki Enoto,J. Escada,Paolo Esposito,C. J. Eyles,Sergio Fabiani,M. Falanga,Serena Falocco,Yi-Zhong Fan,Rob Fender,M. Feroci,Carlo Ferrigno,William R. Forman,Luigi Foschini,C. Fragile,F. Fuerst,Y. Fujita,J. L. Gasent-Blesa,Joseph D. Gelfand,Bruce Gendre,G. Ghirlanda,G. Ghisellini,Marcello Giroletti,D. Goetz,Ersin Gogus,José L. Gómez,D. Gonzalez,Rosario Gonzalez-Riestra,Eric V. Gotthelf,L. Gou,Paola Grandi,Victoria Grinberg,Fabien Grisé,C. Guidorzi,N. Gurlebeck,Tolga Guver,Daryl Haggard,Martin J. Hardcastle,Dieter H. Hartmann,Carole A. Haswell,Alexander Heger,M. Hernanz,Jeremy S. Heyl,L. Ho,J. K. Hoormann,J. Horak,Juhani Huovelin,D. Huppenkothen,R. Iaria,C. Inam Sitki,Adam Ingram,G. L. Israel,Luca Izzo,Michael Burgess,M. Jackson,L. Ji,J. Jiang,Tim Johannsen,C. Jones,S. G. Jorstad,Jari J. E. Kajava,M. Kalamkar,Emrah Kalemci,T. R. Kallman,Atish Kamble,Fabian Kislat,Mózsi Kiss,D. Klochkov,Elmar Koerding,Mari Kolehmainen,Karri I. I. Koljonen,S. Komossa,A. Kong,S. Korpela,Miroslaw Kowalinski,Henric Krawczynski,I. Kreykenbohm,M. Kuss,Dong Lai,M. Lan,Josefin Larsson,Silas Laycock,Davide Lazzati,Denis Leahy,Haizhou Li,J. Li,L. X Li,Tenglin Li,Z. S. Li,Manuel Linares,Matthew L. Lister,H. Liu,Giuseppe Lodato,Anne M. Lohfink,Francesco Longo,G. J. M. Luna,A. A. Lutovinov,S. Mahmoodifar,J.M. Maia,Vincenzo Mainieri,Chandreyee Maitra,Dipankar Maitra,Agnieszka Majczyna,S. Maldera,D. Malyshev,Alberto Manfreda,Antonios Manousakis,R. Manuel,Raffaella Margutti,Andrea Marinucci,Sera Markoff,Alan P. Marscher,Herman L. Marshall,Francesco Massaro,Maura McLaughlin,G. Medina-Tanco,Missagh Mehdipour,Matthew J. Middleton,Roberto Mignani,Petar Mimica,Teresa Mineo,Beatriz Mingo,Giovanni Miniutti,S. M. Mirac,G. Morlino,Armin Vahdat Motlagh,Sara Motta,Alexander A. Mushtukov,Shigehiro Nagataki,F. Nardini,Joonas Nättilä,G. J. Navarro,Barbara Negri,M. Negro,S. Nenonen,Vitaly Neustroev,Fabrizio Nicastro,Andrew Norton,A. A. Nucita,P. T. O'Brien,Steve O'Dell,H. Odaka,Barbara Olmi,Nicola Omodei,M. Orienti,Mauro Orlandini,J. P. Osborne,L. Pacciani,Vaidehi S. Paliya,I. E. Papadakis,A. Papitto,Z. Paragi,P. Pascal,Biswajit Paul,Lucia Pavan,A. Pellizzoni,Emanuele Perinati,Melissa Pesce-Rollins,Enrico Piconcelli,A. G. Pili,M. Pilia,M. Pohl,Gabriele Ponti,D. Porquet,A. Possenti,Konstantin Postnov,Isabella Prandoni,N. Produit,G. Puehlhofer,B. Ramsey,M. Razzano,Nanda Rea,Pablo Reig,K. Reinsch,Thomas H. Reiprich,M. T. Reynolds,Guido Risaliti,Timothy P.L. Roberts,Jerome Rodriguez,M. E. Rossi,Stephan Rosswog,Agata Różańska,A. Rubini,B. Rudak,D. M. Russell,Felix Ryde,S. Sabatini,Gloria Sala,M. Salvati,Manami Sasaki,Tuomas Savolainen,R. D. Saxton,Simone Scaringi,Kevin Schawinski,Norbert S. Schulz,Axel Schwope,Paola Severgnini,M. Sharon,Aarran W. Shaw,Andrew Shearer,X. Shesheng,I. C Shih,Kevin M. Silva,Rui M. Curado da Silva,Eric H. Silver,Alan P. Smale,F. Spada,G. Spandre,A. Stamerra,Benjamin Stappers,Sumner Starrfield,Lukasz Stawarz,Nikolaos Stergioulas,Abigail L. Stevens,H. Stiele,V. F. Suleimanov,R. A. Sunyaev,Agnieszka Slowikowska,Francesco Tamborra,Fabrizio Tavecchio,Roberto Taverna,Andrea Tiengo,Laura Tolos,Francesco Tombesi,John A. Tomsick,H. Tong,Gabriel Török,Diego F. Torres,A. Tortosa,Andrea Tramacere,V. Trimble,Ginevra Trinchieri,Sergey S. Tsygankov,M. Tuerler,S. Turriziani,Francesco Ursini,Phil Uttley,Peggy Varniere,F. H. Vincent,Eda Vurgun,Chunhua Wang,Zhenhua Wang,Anna L. Watts,John C Wheeler,K. Wiersema,Rudy Wijnands,Jörn Wilms,Anna Wolter,K. S. Wood,K. Wu,X. Wu,W. Xiangyu,F. Xie,Rong Xu,S. P Yan,J. Yang,W. Yu,Feng Yuan,Anna Zajczyk,D. Zanetti,R. Zanin,C. Zanni,Luca Zappacosta,Andrzej A. Zdziarski,A. Zech,Haocheng Zhang,S. Zhang,W. Zhang,Abderahmen Zoghbi +421 more
TL;DR: The X-ray Imaging Polarimetry Explorer (XIPE) as discussed by the authors is a mission dedicated to Xray Astronomy which is in a competitive phase A as fourth medium size mission of ESA (M4).
Journal ArticleDOI
Neutron star mass and radius measurements from atmospheric model fits to X-ray burst cooling tail spectra
Joonas Nättilä,Joonas Nättilä,M. C. Miller,Andrew W. Steiner,Jari J. E. Kajava,Jari J. E. Kajava,V. F. Suleimanov,V. F. Suleimanov,Juri Poutanen,Juri Poutanen,Juri Poutanen +10 more
TL;DR: In this paper, a hierarchical Bayesian fitting framework was proposed to fit atmosphere models of X-ray bursting neutron stars directly to the observed spectra, which can be used to constrain NS masses and radii.
Journal ArticleDOI
Spectral variability of ultraluminous X-ray sources
Jari J. E. Kajava,Juri Poutanen +1 more
TL;DR: In this article, the spectral variability of 11 ultraluminous X-ray sources (ULXs) was studied using archived XMM-Newton and Chandra observations, and three models were used to describe the observed spectra: a power law, a multicolour disc (MCD) and a combination of these two models.
Journal ArticleDOI
Equation of state constraints for the cold dense matter inside neutron stars using the cooling tail method
Joonas Nättilä,Andrew W. Steiner,Jari J. E. Kajava,V. F. Suleimanov,V. F. Suleimanov,Juri Poutanen,Juri Poutanen +6 more
TL;DR: In this article, the cooling phase of thermonuclear (type-I) X-ray bursts can be used to constrain neutron star (NS) compactness by comparing the observed cooling tracks of bursts to accurate theoretical atmosphere model calculations.
Journal ArticleDOI
The effect of accretion on the measurement of neutron star mass and radius in the low-mass X-ray binary 4U 1608−52
Juri Poutanen,Juri Poutanen,Jonas Nattila,Jonas Nattila,Jari J. E. Kajava,Jari J. E. Kajava,Outi-Marja Latvala,Duncan K. Galloway,E. Kuulkers,Valery F. Suleimanov,Valery F. Suleimanov +10 more
TL;DR: In this paper, an analysis of the X-ray emission from bursts observed from 4U 1608-52 at various persistent fluxes is presented, showing a strong dependence of the burst properties on the flux and spectral hardness of the persistent emission before burst.