Related papers: XTE J1906+090: a persistent low luminosity Be X-ra…

INTEGRAL, XMM-Newton and Rossi-XTE Observations of the State Transition of the X-ray Transient and Black Hole Candidate XTE J1720-318

We report the results of extensive high-energy observations of the X-ray transient and black hole candidate XTE J1720-318 performed with INTEGRAL, XMM-Newton and RXTE. The source, which underwent an outburst in January 2003, was observed in…

Astrophysics · Physics 2007-05-23 Marion Cadolle Bel , Andrea Goldwurm , Jerome Rodriguez , Paolo Goldoni , Stephane Corbel , Patrick Sizun , Arvind Parmar , Eric Kuulkers , Fiamma Capitanio , Melania Del Santo , Antonella Tarana , Pietro Ubertini , Jean-Pierre Roques , Laurent Bouchet , Ruben Farinelli , Filippo Frontera , Niels Westergaard

First INTEGRAL Observations of Eight Persistent Neutron Star Low Mass X-ray Binaries

Early results from the INTEGRAL Core Program, for a sample of eight persistently bright neutron star low mass X-ray binaries in the energy range from 5 keV to 200 keV are presented. It is shown that INTEGRAL efficiently detects sources and…

Astrophysics · Physics 2009-11-10 A. Paizis , V. Beckmann , T. J. -L. Courvoisier , O. Vilhu , A. Lutovinov , K. Ebisawa , D. Hannikainen , M. Chernyakova , J. A. Zurita Heras , J. Rodriguez , A. A. Zdziarski , A. Bazzano , E. Kuulkers , T. Oosterbroek , F. Frontera , A. Gimenez , P. Goldoni , A. Santangelo , G. G. C. Palumbo

Probing the nature of IGR J16493-4348: Spectral and temporal analysis of the 1-100 keV emission

IGR J16493-4348 was one of the first new sources to be detected by the INTEGRAL gamma-ray telescope in the 18-100 keV energy band. Based upon spatial coincidence the source was originally associated with the free radio pulsar PSR…

Astrophysics · Physics 2009-11-13 A. B. Hill , A. J. Dean , R. Landi , V. A. McBride , A. De Rosa , A. J. Bird , A. Bazzano , V. Sguera

Identifications of Five INTEGRAL Sources via Optical Spectroscopy

The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) is discovering hundreds of new hard X-ray sources, many of which remain unidentified. We report on optical spectroscopy of five such sources for which X-ray observations at…

High Energy Astrophysical Phenomena · Physics 2011-02-11 Suzanne C. Butler , John A. Tomsick , Sylvain Chaty , Juan A. Zurita Heras , Jerome Rodriguez , Roland Walter , Philip Kaaret , Emrah Kalemci , Mehtap Özbey

Detection of a cyclotron line in the Be X-ray pulsar IGR J06074$+$2205

IGR J0607.4+2205 is a transient Be X-ray binary discovered two decades ago. IGR J0607.4+2205 underwent an outburst in 2023 during which it was observed twice with \textit{NuSTAR}. The main goal of this work is to model the broadband X-ray…

High Energy Astrophysical Phenomena · Physics 2024-02-28 Kinjal Roy , Rahul Sharma , Hemanth Manikantan , Biswajit Paul

The newly discovered Be/X-ray binary Swift J004516.6-734703 in the SMC: witnessing the emergence of a circumstellar disc

We report on the discovery of Swift J004516.6-734703, a Be/X-ray binary system by the Swift SMC Survey, S-CUBED. Swift J004516.6-734703, or SXP 146.6, was found to be exhibiting a bright (~10^37 erg/s) X-ray outburst in 2020 June 18. The…

High Energy Astrophysical Phenomena · Physics 2020-09-30 J. A. Kennea , M. J. Coe , P. A. Evans , I. M. Monageng , L. J. Townsend , M. H. Siegel , A. Udalski , D. A. H. Buckley

A Persistent High-Energy Flux from the Heart of the Milky Way : Integral's view of the Galactic Center

The Ibis/Isgri imager on Integral detected for the first time a hard X-ray source, IGR J17456-2901, located within 1' of Sgr A* over the energy range 20-100 keV. Here we present the results of a detailed analysis of ~7 Ms of Integral…

Astrophysics · Physics 2009-11-13 Guillaume Belanger , Andrea Goldwurm , Matthieu Renaud , Regis Terrier , Fulvio Melia , Niels Lund , Jacques Paul , Gerry Skinner , Farah Yusef-Zadeh

IGRJ16479-4514: the first eclipsing supergiant fast X-ray transient?

Supergiant fast X-ray transients are a new class of high mass X-ray binaries recently discovered with INTEGRAL. Hours long outbursts from these sources have been observed on numerous occasions at luminosities of ~1E36-1E37 erg/s, whereas…

Astrophysics · Physics 2009-11-13 E. Bozzo , L. Stella , G. Israel , M. Falanga , S. Campana

A four-year baseline Swift study of enigmatic X-ray transients located near the Galactic center

We report on continued monitoring observations of the Galactic center carried out by the X-ray telescope aboard the Swift satellite in 2008 and 2009. This campaign revealed activity of the five known X-ray transients AX J1745.6-2901, CXOGC…

High Energy Astrophysical Phenomena · Physics 2015-05-19 N. Degenaar , R. Wijnands

The discovery of hard X-ray emission in the persistent flux of the Rapid Burster

We report the first detection with INTEGRAL of persistent hard X-ray emission (20 to 100 keV) from the Rapid Burster (MXB 1730-335), and describe its full spectrum from 3 to 100 keV. The source was detected on February/March 2003 during one…

Astrophysics · Physics 2009-11-10 M. Falanga , R. Farinelli , P. Goldoni , F. Frontera , A. Goldwurm , L. Stella

In-depth study of long-term variability in the X-ray emission of the Be/X-ray binary system AX J0049.4-7323

AX J0049.4-7323 is a Be/X-ray binary in the Small Magellanic Cloud hosting a ~750 s pulsar which has been observed over the last ~17 years by several X-ray telescopes. Despite numerous observations, little is known about its X-ray…

High Energy Astrophysical Phenomena · Physics 2018-06-13 L. Ducci , P. Romano , C. Malacaria , L. Ji , E. Bozzo , A. Santangelo

INTEGRAL high energy detection of the transient IGR J11321-5311

Context: The transient hard X-ray source IGR J11321-5311 was discovered by INTEGRAL on June 2005, during observations of the Crux spiral arm. To date, this is the only detection of the source to be reported by any X/gamma-ray mission. Aims:…

Astrophysics · Physics 2009-11-13 V. Sguera , A. Bazzano , A. J. Bird , A. B. Hill , A. J. Dean , L. Bassani , A. Malizia , P. Ubertini

Swift, RXTE, and INTEGRAL observation of Swift J1922.7-1716

We report the results of analyzing Swift, RossiXTE, and INTEGRAL data of Swift J1922.7-1716, a likely transient X-ray source discovered by Swift/BAT. Both the fast variability measured by the RXTE/PCA and the combined Swift/XRT, RXTE/PCA,…

Astrophysics · Physics 2009-11-11 M. Falanga , T. Belloni , S. Campana

Discovery of thermonuclear (Type I) X-ray bursts in the X-ray binary Swift J1858.6-0814 observed with NICER and NuSTAR

Swift J1858.6-0814 is a recently discovered X-ray binary notable for extremely strong variability (by factors $>100$ in soft X-rays) in its discovery state. We present the detection of five thermonuclear (Type I) X-ray bursts from Swift…

High Energy Astrophysical Phenomena · Physics 2020-10-21 D. J. K. Buisson , D. Altamirano , P. Bult , G. C. Mancuso , T. Güver , G. K. Jaisawal , J. Hare , A. C. Albayati , Z. Arzoumanian , N. Castro Segura , D. Chakrabarty , P. Gandhi , S. Guillot , J. Homan , K. C. Gendreau , J. Jiang , C. Malacaria , J. M. Miller , M. Özbey Arabacı , R. Remillard , T. E. Strohmayer , F. Tombesi , J. A. Tomsick , F. M. Vincentelli , D. J. Walton

Unveiling Soft Gamma-Ray Repeaters with INTEGRAL

Thanks to INTEGRAL's long exposures of the Galactic Plane, the two brightest Soft Gamma-Ray Repeaters, SGR 1806-20 and SGR 1900+14, have been monitored and studied in detail for the first time at hard-X/soft gamma rays. This has produced a…

Astrophysics · Physics 2009-11-11 D. Gotz , S. Mereghetti , K. Hurley

Early X-ray and optical observations of the soft gamma-ray repeater SGR 0418+5729

Emission of two short hard X-ray bursts on 2009 June 5 disclosed the existence of a new soft gamma-ray repeater, now catalogued as SGR 0418+5729. After a few days, X-ray pulsations at a period of 9.1 s were discovered in its persistent…

High Energy Astrophysical Phenomena · Physics 2012-10-19 P. Esposito , G. L. Israel , R. Turolla , A. Tiengo , D. Götz , A. De Luca , R. P. Mignani , S. Zane , N. Rea , V. Testa , P. A. Caraveo , S. Chaty , F. Mattana , S. Mereghetti , A. Pellizzoni , P. Romano

Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922

We present the transient nature of INTEGRAL source IGR J17285-2922, identified from a single period of activity during an IBIS/ISGRI Galactic Centre Deep Exposure in September 2003. The source has a maximum detection significance of 14…

Astrophysics · Physics 2009-11-11 E. J. Barlow , A. J. Bird , D. J. Clark , R. Cornelisse , A. J. Dean , A. B. Hill , L. Moran , V. Sguera , S. E. Shaw , D. R. Willis , F. Capitanio , M. Del Santo , L. Bassani

Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

MAXI J1820+070 is a low-mass X-ray binary with a black hole as a compact object. This binary underwent an exceptionally bright X-ray outburst from March to October 2018, showing evidence of a non-thermal particle population through its…

High Energy Astrophysical Phenomena · Physics 2022-10-07 H. Abe , S. Abe , V. A. Acciari , T. Aniello , S. Ansoldi , L. A. Antonelli , A. Arbet Engels , C. Arcaro , M. Artero , K. Asano , D. Baack , A. Babić , A. Baquero , U. Barres de Almeida , J. A. Barrio , I. Batković , J. Baxter , J. Becerra González , W. Bednarek , E. Bernardini , M. Bernardos , A. Berti , J. Besenrieder , W. Bhattacharyya , C. Bigongiari , A. Biland , O. Blanch , G. Bonnoli , Ž. Bošnjak , I. Burelli , G. Busetto , R. Carosi , M. Carretero-Castrillo , G. Ceribella , Y. Chai , A. Chilingarian , S. Cikota , E. Colombo , J. L. Contreras , J. Cortina , S. Covino , G. D'Amico , V. D'Elia , P. Da Vela , F. Dazzi , A. De Angelis , B. De Lotto , A. Del Popolo , M. Delfino , J. Delgado , C. Delgado Mendez , D. Depaoli , F. Di Pierro , L. Di Venere , D. Dominis Prester , A. Donini , D. Dorner , M. Doro , D. Elsaesser , G. Emery , V. Fallah Ramazani , L. Fariña , A. Fattorini , L. Font , C. Fruck , S. Fukami , Y. Fukazawa , R. J. García López , M. Garczarczyk , S. Gasparyan , M. Gaug , J. G. Giesbrecht Paiva , N. Giglietto , F. Giordano , P. Gliwny , N. Godinović , R. Grau , D. Green , J. G. Green , D. Hadasch , A. Hahn , T. Hassan , L. Heckmann , J. Herrera , J. Hoang , D. Hrupec , M. Hütten , R. Imazawa , T. Inada , R. Iotov , K. Ishio , I. Jiménez Martínez , J. Jormanainen , D. Kerszberg , Y. Kobayashi , H. Kubo , J. Kushida , A. Lamastra , D. Lelas , F. Leone , E. Lindfors , L. Linhoff , S. Lombardi , F. Longo , R. López-Coto , M. López-Moya , A. López-Oramas , S. Loporchio , A. Lorini , E. Lyard , B. Machado de Oliveira Fraga , P. Majumdar , M. Makariev , G. Maneva , N. Mang , M. Manganaro , S. Mangano , K. Mannheim , M. Mariotti , M. Martínez , A. Mas Aguilar , D. Mazin , S. Menchiari , S. Mender , S. Mićanović , D. Miceli , T. Miener , J. M. Miranda , R. Mirzoyan , E. Molina , H. A. Mondal , A. Moralejo , D. Morcuende , V. Moreno , T. Nakamori , C. Nanci , L. Nava , V. Neustroev , M. Nievas Rosillo , C. Nigro , K. Nilsson , K. Nishijima , T. Njoh Ekoume , K. Noda , S. Nozaki , Y. Ohtani , T. Oka , A. Okumura , J. Otero-Santos , S. Paiano , M. Palatiello , D. Paneque , R. Paoletti , J. M. Paredes , L. Pavletić , M. Persic , M. Pihet , G. Pirola , F. Podobnik , P. G. Prada Moroni , E. Prandini , G. Principe , C. Priyadarshi , I. Puljak , W. Rhode , M. Ribó , J. Rico , C. Righi , A. Rugliancich , N. Sahakyan , T. Saito , S. Sakurai , K. Satalecka , F. G. Saturni , B. Schleicher , K. Schmidt , F. Schmuckermaier , J. L. Schubert , T. Schweizer , J. Sitarek , V. Sliusar , D. Sobczynska , A. Spolon , A. Stamerra , J. Strišković , D. Strom , M. Strzys , Y. Suda , T. Surić , H. Tajima , M. Takahashi , R. Takeishi , F. Tavecchio , P. Temnikov , K. Terauchi , T. Terzić , M. Teshima , L. Tosti , S. Truzzi , A. Tutone , S. Ubach , J. van Scherpenberg , M. Vazquez Acosta , S. Ventura , V. Verguilov , I. Viale , C. F. Vigorito , V. Vitale , I. Vovk , R. Walter , M. Will , C. Wunderlich , T. Yamamoto , D. Zarić , H. Abdalla , F. Aharonian , F. Ait Benkhali , E. O. Angüner , H. Ashkar , M. Backes , V. Baghmanyan , V. Barbosa Martins , R. Batzofin , Y. Becherini , D. Berge , K. Bernlöhr , M. Böttcher , C. Boisson , J. Bolmont , M. de Bony de Lavergne , F. Bradascio , M. Breuhaus , R. Brose , F. Brun , T. Bulik , T. Bylund , F. Cangemi , S. Caroff , S. Casanova , M. Cerruti , T. Chand , S. Chandra , A. Chen , O. U. Chibueze , G. Cotter , P. Cristofari , J. Damascene Mbarubucyeye , J. Devin , A. Djannati-Ataï , A. Dmytriiev , K. Egberts , J. -P. Ernenwein , A. Fiasson , G. Fichet de Clairfontaine , G. Fontaine , M. Füßling , S. Funk , S. Gabici , S. Ghafourizadeh , G. Giavitto , D. Glawion , J. F. Glicenstein , P. Goswami , G. Grolleron , J. A. Hinton , M. Hörbe , C. Hoischen , T. L. Holch , M. Holler , D. Horns , Zhiqiu Huang , M. Jamrozy , F. Jankowsky , V. Joshi , I. Jung-Richardt , E. Kasai , K. Katarzyński , U. Katz , B. Khélifi , W. Kluźniak , Nu. Komin , K. Kosack , D. Kostunin , R. G. Lang , S. Le Stum , A. Lemière , M. Lemoine-Goumard , J. -P. Lenain , F. Leuschner , T. Lohse , A. Luashvili , I. Lypova , J. Mackey , J. Majumdar , D. Malyshev , D. Malyshev , V. Marandon , P. Marchegiani , G. Martí-Devesa , R. Marx , G. Maurin , M. Meyer , A. Mitchell , R. Moderski , L. Mohrmann , A. Montanari , E. Moulin , J. Muller , T. Murach , K. Nakashima , M. de Naurois , A. Nayerhoda , J. Niemiec , A. Priyana Noel , P. O'Brien , S. Ohm , L. Olivera-Nieto , E. de Ona Wilhelmi , M. Ostrowski , S. Panny , M. Panter , R. D. Parsons , V. Poireau , D. A. Prokhorov , H. Prokoph , G. Pühlhofer , M. Punch , A. Quirrenbach , P. Reichherzer , A. Reimer , O. Reimer , M. Renaud , F. Rieger , G. Rowell , B. Rudak , H. Rueda Ricarte , E. Ruiz-Velasco , V. Sahakian , H. Salzmann , A. Santangelo , M. Sasaki , J. Schäfer , F. Schüssler , H. M. Schutte , U. Schwanke , J. N. S. Shapopi , H. Sol , A. Specovius , S. Spencer , Ł. Stawarz , R. Steenkamp , S. Steinmassl , C. Steppa , I. Sushch , H. Suzuki , T. Takahashi , T. Tanaka , C. Thorpe-Morgan , M. Tluczykont , L. Tomankova , N. Tsuji , Y. Uchiyama , C. van Eldik , B. van Soelen , M. Vecchi , J. Veh , C. Venter , J. Vink , S. J. Wagner , R. White , A. Wierzcholska , Yu Wun Wong , A. Yusafzai , M. Zacharias , R. Zanin , D. Zargaryan , A. A. Zdziarski , A. Zech , S. J. Zhu , S. Zouari , N. Żywucka , A. Acharyya , C. B. Adams , P. Batista , W. Benbow , M. Capasso , J. L. Christiansen , A. J. Chromey , M. Errando , A. Falcone , Q. Feng , J. P. Finley , G. M Foote , L. Fortson , A. Furniss , A. Gent , W. F Hanlon , O. Hervet , J. Holder , B. Hona , T. B. Humensky , W. Jin , P. Kaaret , M. Kertzman , M. Kherlakian , T. K. Kleiner , S. Kumar , M. J. Lang , M. Lundy , G. Maier , C. E. McGrath , J. Millis , P. Moriarty , R. Mukherjee , S. O'Brien , R. A. Ong , N. Park , S. R. Patel , K. Pfrang , M. Pohl , E. Pueschel , J. Quinn , K. Ragan , P. T. Reynolds , D. Ribeiro , E. Roache , J. L. Ryan , I. Sadeh , L. Saha , M. Santander , G. H. Sembroski , R. Shang , M. Splettstoesser , D. Tak , J. V. Tucci , A. Weinstein , D. A. Williams , T. J. Williamson , V. Bosch-Ramon , C. Celma , M. Linares , D. M. Russell , G. Sala

Periodicities in X-ray Binaries from Swift/BAT Observations

The Burst Alert Telescope (BAT) on board Swift has accumulated extensive light curves for 265 sources (not including GRBs) in the energy range 14 to 200 keV. We present here a summary of searches for periodic modulation in the flux from…

Astrophysics · Physics 2008-11-26 R. Corbet , C. Markwardt , L. Barbier , S. Barthelmy , J. Cummings , N. Gehrels , H. Krimm , D. Palmer , T. Sakamoto , G. Sato , J. Tueller

The 2009 outburst from the new X-ray transient and black-hole candidate XTE J1652$-$453

The RXTE and Swift observations on the 2009 outburst from a newly discovered transient and black-hole candidate XTE J1652$-$453 are analyzed. The source was observed by RXTE to behave a sequence of spectral states that are typical to the…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Peng Han , Jinlu Qu , Shu Zhang , Jianmin Wang , Liming Song , Guoqiang Ding , Shuping Yan , Yu Lu