Related papers: X-ray and Optical Observations of the Black Hole C…

Suzaku broadband spectroscopy of Swift J1753.5-0127 in the Low-Hard State

We present Suzaku observations of the Galactic black hole candidate Swift J1753.5-0127 in the low-hard state. The broadband coverage of Suzaku enables us to detect the source over the energy range 0.6 -- 250 keV. The broadband spectrum (2…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Mark Reynolds , Jon Miller , Jeroen Homan , Giovanni Miniutti

Broad-band spectral analysis of LMXB XTE J1710-281 with Suzaku

This work presents the broad-band time-averaged spectral analysis of neutron star low-mass X-ray binary, XTE J1710-281 by using the Suzaku archival data. The source was in a hard or an intermediate spectral state during this observation.…

High Energy Astrophysical Phenomena · Physics 2020-06-17 Prince Sharma , Rahul Sharma , Chetana Jain , Anjan Dutta

Suzaku Observations of Spectral Variations of the Ultra Luminous X-ray Source Holmberg IX X-1

Observations of the Ultra Luminous X-ray source (ULX) Holmberg IX X-1 were carried out with Suzaku twice, once on 2012 April 13 and then on 2012 October 24, with exposures of 180 ks and 217 ks, respectively. The source showed a hard…

High Energy Astrophysical Phenomena · Physics 2016-12-14 Shogo B. Kobayashi , Kazuhiro Nakazawa , Kazuo Makishima

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

Hard X-ray emission of the microquasar GX 339-4 in the low/hard state

We present the analysis of the high energy emission of the Galactic black hole binary GX 339-4 in a low/hard state at the beginning of its 2004 outburst. The data from 273 ks of INTEGRAL observations, spread over 4 weeks, are analyzed,…

Astrophysics · Physics 2008-11-26 A. Joinet , E. Jourdain , J. Malzac , J. P. Roques , S. Corbel , J. Rodriguez , E. Kalemci

A multi-wavelength study of the hard and soft states of MAXI J1820+070 during its 2018 outburst

We present a comprehensive multi-wavelength spectral analysis of the black hole X-ray binary MAXI J1820+070 during its 2018 outburst, utilizing AstroSat far UV, soft and hard X-ray data, along with (quasi-)simultaneous optical and X-ray…

High Energy Astrophysical Phenomena · Physics 2024-06-19 Srimanta Banerjee , Gulab C. Dewangan , Christian Knigge , Maria Georganti , Poshak Gandhi , N. P. S. Mithun , Payaswini Saikia , Dipankar Bhattacharya , David M. Russell , Fraser Lewis , Andrzej A. Zdziarski

Suzaku Observation of X-ray Variability in Soft State LMC X-1

This paper reports the results of Suzaku observation of the spectral variation of the black hole binary LMCX-1 in the soft state. The observationwas carried out in 2009 from July 21 to 24. the obtained net count rate was $\sim$30 counts…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Shu Koyama , Shin'ya Yamada , Aya Kubota , Makoto S. Tashiro , Yukikatsu Terada , Kazuo Makishima

SAX J1810.8-2609: A New Hard X-ray Bursting Transient

The transient X-ray source SAX J1810.8-2609 was discovered on 1998, March 10 with the Wide Field Cameras on board the BeppoSAX satellite, while observing the Galactic Bulge in the 2-28 keV energy range. On March 11, a strong type-I X-ray…

Astrophysics · Physics 2009-10-31 L. Natalucci , A. Bazzano , M. Cocchi , P. Ubertini , J. Heise , E. Kuulkers , J. J. M. in 't Zand , M. J. S. Smith

The peculiar spectral evolution of the new X-ray transient MAXI J0637-430

We studied the transient Galactic black hole candidate MAXI J0637-430 with data from Insight-HXMT, Swift and XMM-Newton. The broad-band X-ray observations from Insight-HXMT help us constrain the power-law component. MAXI J0637-430 is…

High Energy Astrophysical Phenomena · Physics 2022-06-22 R. C. Ma , R. Soria , L. Tao , W. Zhang , J. L. Qu , S. N. Zhang , L. Zhang , E. L. Qiao , S. J. Zhao , M. Y. Ge , X. B. Li , Y. Huang , L. M. Song , S. Zhang , Q. C. Bu , Y. N. Wang , X. Ma , S. M. Jia

An ultrafast outflow in the black hole candidate MAXI J1810-222?

The transient X-ray source MAXI J1810-222 was discovered in 2018 and has been active ever since. A long combined radio and X-ray monitoring campaign was performed with ATCA and Swift respectively. It has been proposed that MAXI J1810-222 is…

High Energy Astrophysical Phenomena · Physics 2023-05-03 M. Del Santo , C. Pinto , A. Marino , A. D'Aì , P. -O. Petrucci , J. Malzac , J. Ferreira , F. Pintore , S. E. Motta , T. D. Russell , A. Segreto , A. Sanna

Multiwavelength Observations of the Black Hole X-ray Binary MAXI J1820$+$070 in the Rebrightening Phase

We report the results of quasi-simultaneous multiwavelength (near-infrared, optical, UV, and X-ray) observations of the Galactic X-ray black hole binary MAXI J1820+070 performed in 2019 May 10-13, $\sim 60$ days after the onset of the first…

High Energy Astrophysical Phenomena · Physics 2024-12-17 Tomohiro Yoshitake , Megumi Shidatsu , Yoshihiro Ueda , Shin Mineshige , Katsuhiro L. Murata , Ryo Adachi , Hiroyuki Maehara , Daisaku Nogami , Hitoshi Negoro , Nobuyuki Kawai , Masafumi Niwano , Ryohei Hosokawa , Tomoki Saito , Yumiko Oasa , Takuya Takarada , Takumi Shigeyoshi , OISTER Collaboration

The truncated disk from Suzaku data of GX 339-4 in the extreme very high state

We report on the geometry of accretion disk and high energy coronae in the strong Comptonization state (the very high/steep power law/hard intermediate state) based on a Suzaku observation of the famous Galactic black hole GX 339-4. These…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Manami Tamura , Aya Kubota , Shinya Yamada , Chris Done , Mari Kolehmainen , Yoshihiro Ueda , Shunsuke Torii

X-Ray Observations of the Black Hole Transient 4U 1630-47 During Two Years of X-Ray Activity

The black hole candidate (BHC) X-ray transient 4U 1630-47 continuously produced strong X-ray emission for over 2 years during 2002-2004. We use observations made with the Rossi X-ray Timing Explorer (RXTE) to study the source throughout the…

Astrophysics · Physics 2009-11-11 John A. Tomsick , Stephane Corbel , Andrea Goldwurm , Philip Kaaret

MAXI~J1348--630: Estimating the black hole mass and binary inclination using a scaling technique

The outburst activity in the MAXI~J1348--630 has sparked a great deal of controversy, whether the source contains a black hole (BH). Here, we present the results of our analysis of the outburst of MAXI J348--630 using Swift/XRT data. We…

Solar and Stellar Astrophysics · Physics 2023-01-11 Lev Titarchuk , Elena Seifina

Characterizing the Broadband Reflection Spectrum of MAXI J1803-298 During its 2021 Outburst with NuSTAR and NICER

MAXI J1803-298 is a transient black hole candidate discovered in May of 2021 during an outburst that lasted several months. Multiple X-ray observations reveal recurring "dipping" intervals in several of its light curves, particularly during…

High Energy Astrophysical Phenomena · Physics 2024-10-03 Oluwashina Adegoke , Javier Garcia , Riley Connors , Yuanze Ding , Guglielmo Mastroserio , James Steiner , Adam Ingram , Fiona Harrison , John Tomsick , Erin Kara , Missagh Mehdipour , Keigo Fukumura , Daniel Stern , Santiago Ubach , Matteo Lucchini

On the nature of the X-ray binary transient MAXI J1834-021: clues from its first observed outburst

MAXI J1834-021 is a new X-ray transient that was discovered in February 2023. We analysed the spectral and timing properties of MAXI J1834-021 using NICER, NuStar and Swift data collected between March and October 2023. The light curve…

High Energy Astrophysical Phenomena · Physics 2025-05-27 A. Manca , A. Marino , A. Borghese , F. Coti Zelati , G. Mastroserio , A. Sanna , J. Homan , R. Connors , M. Del Santo , M. Armas Padilla , T. Muñoz-Darias , T. Di Salvo , N. Rea , J. A. García , A. Riggio , M. C. Baglio , L. Burderi

Multiwavelength observations of MAXI J1820+070 during its outburst decay and subsequent mini-outburst

We present results from quasi-simultaneous multiwavelength observations of the Galactic black hole X-ray transient MAXI J1820$+$070 during the decay of the 2018 outburst and its entire subsequent mini-outburst in March 2019. We fit the…

High Energy Astrophysical Phenomena · Physics 2022-07-06 M. Özbey Arabacı , E. Kalemci , T. Dinçer , C. Bailyn , D. Altamirano , T. Ak

Evolution of MAXI J1631-479 during the January 2019 outburst observed by INTEGRAL/IBIS

We report on a recent bright outburst from the new X-ray binary transient MAXI J1631-479, observed in January 2019. In particular, we present the 30-200 keV analysis of spectral transitions observed with INTEGRAL/IBIS during its Galactic…

High Energy Astrophysical Phenomena · Physics 2020-01-22 M. Fiocchi , F. Onori , A. Bazzano , A. J. Bird , A. Bodaghee , P. A. Charles , V. A. Lepingwell , A. Malizia , N. Masetti , L. Natalucci , P. Ubertini

MAXI GSC observations of a spectral state transition in the black hole candidate XTE J1752-223

We present the first results on the black hole candidate XTE J1752-223 from the Gas Slit Camera (GSC) on-board the Monitor of All-sky X-ray Image (MAXI) on the International Space Station. Including the onset of the outburst reported by the…

High Energy Astrophysical Phenomena · Physics 2015-05-19 Satoshi Nakahira , Kazutaka Yamaoka , Mutsumi Sugizaki , Yoshihiro Ueda , Hitoshi Negoro , Ken Ebisawa , Nobuyuki Kawai , Masaru Matsuoka , Hiroshi Tsunemi , Arata Daikyuji , Satoshi Eguchi , Kazuo Hiroi , Masaki Ishikawa , Ryoji Ishiwata , Naoki Isobe , Kazuyoshi Kawasaki , Masashi Kimura , Mitsuhiro Kohama , Tatehiro Mihara , Sho Miyoshi , Mikio Morii , Yujin E. Nakagawa , Motoki Nakajima , Hiroshi Ozawa , Tetsuya Sootome , Kousuke Sugimori , Motoko Suzuki , Hiroshi Tomida , Shiro Ueno , Takayuki Yamamoto , Atsumasa Yoshida , MAXI team

Reflection and timing study of the transient black hole X-ray binary MAXI J1803-298 with NuSTAR

The transient black hole X-ray binary MAXI J1803-298 was discovered on 2021 May 1, as it went into outburst from a quiescent state. As the source rose in flux it showed periodic absorption dips and fit the timing and spectral…

High Energy Astrophysical Phenomena · Physics 2023-06-14 Benjamin M. Coughenour , John A. Tomsick , Guglielmo Mastroserio , James M. Steiner , Riley M. T. Connors , Jiachen Jiang , Jeremy Hare , Aarran W. Shaw , Renee M. Ludlam , A. C. Fabian , Javier García , Joel B. Coley