Related papers: A Comprehensive X-ray Report on AT2019wey

The black hole X-ray transient Swift J1357.2-0933 as seen with Swift and NuSTAR during its 2017 outburst

We report on observations of black hole Swift J1357.2-0933, a member of the modest population of very faint X-ray transients. This source has previously shown intense dips in the optical lightcurve, a phenomena that has been linked to the…

High Energy Astrophysical Phenomena · Physics 2019-03-13 Aru Beri , B. E. Tetarenko , A. Bahramian , Diego Altamirano , Poshak Gandhi , G. R. Sivakoff , N. Degenaar , M. J. Middleton , R. Wijnands , J. V. Hernándz Santisteban , John A. Paice

Probing the accretion geometry of the transient accreting millisecond pulsar SAX J1808.4-3658: transitions to the propeller regime

We analyze three NuSTAR observations and two NICER observations of the transient accreting millisecond pulsar SAX J1808.4-3658 in the hard spectral state during its most recent outbursts in 2022 and 2025. The spectral analysis of the…

High Energy Astrophysical Phenomena · Physics 2026-04-09 Mahasweta Bhattacharya , Aditya S. Mondal , Gulab C. Dewangan

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

AT2019wxt: An ultra-stripped supernova candidate discovered in electromagnetic follow-up of a gravitational wave trigger

We present optical, radio and X-ray observations of a rapidly-evolving transient AT2019wxt (PS19hgw), discovered during the search for an electromagnetic (EM) counterpart to the gravitational-wave (GW) trigger S191213g (LIGO Scientific…

High Energy Astrophysical Phenomena · Physics 2023-07-26 Hinna Shivkumar , Amruta D. Jaodand , Arvind Balasubramanian , Christoffer Fremling , Alessandra Corsi , Anastasios Tzanidakis , Samaya Nissanke , Mansi Kasliwal , Murray Brightman , Geert Raaijmakers , Kristin Kruse Madsen , Fiona Harrison , Dario Carbone , Nayana A. J. , Jean-Michel Désert , Igor Andreoni

Black hole candidate XTE J1752-223: Swift observations of canonical states during outburst

We present Swift broadband observations of the recently discovered black hole candidate, X-ray transient, XTE J1752-223, obtained over the period of outburst from October 2009 to June 2010. From Swift-UVOT data we confirm the presence of an…

High Energy Astrophysical Phenomena · Physics 2015-05-19 P. A. Curran , T. J. Maccarone , P. Casella , P. A. Evans , W. Landsman , H. A. Krimm , C. Brocksopp , M. Still

Investigating the nature and properties of MAXI J1810-222 with radio and X-ray observations

We present results from radio and X-ray observations of the X-ray transient MAXI J1810-222. The nature of the accretor in this source has not been identified. In this paper, we show results from a quasi-simultaneous radio and X-ray…

High Energy Astrophysical Phenomena · Physics 2022-05-13 T. D. Russell , M. Del Santo , A. Marino , A. Segreto , S. E. Motta , A. Bahramian , S. Corbel , A. D'Aì , T. Di Salvo , J. C. A. Miller-Jones , C. Pinto , F. Pintore , A. Tzioumis

Sub-relativistic Outflow and Hours-Timescale Large-amplitude X-ray Dips during Super-Eddington Accretion onto a Low-mass Massive Black Hole in the Tidal Disruption Event AT2022lri

We present the tidal disruption event (TDE) AT2022lri, hosted in a nearby ($\approx\!144$ Mpc) quiescent galaxy with a low-mass massive black hole ($10^4\,M_\odot < M_{\rm BH} < 10^6\,M_\odot$). AT2022lri belongs to the TDE-H+He subtype.…

High Energy Astrophysical Phenomena · Physics 2024-05-21 Yuhan Yao , Muryel Guolo , Francesco Tombesi , Ruancun Li , Suvi Gezari , Javier A. García , Lixin Dai , Ryan Chornock , Wenbin Lu , S. R. Kulkarni , Keith C. Gendreau , Dheeraj R. Pasham , S. Bradley Cenko , Erin Kara , Raffaella Margutti , Yukta Ajay , Thomas Wevers , Tom M. Kwan , Igor Andreoni , Joshua S. Bloom , Andrew J. Drake , Matthew J. Graham , Erica Hammerstein , Russ R. Laher , Natalie LeBaron , Ashish A. Mahabal , Brendan O'Connor , Josiah Purdum , Vikram Ravi , Huei Sears , Yashvi Sharma , Roger Smith , Jesper Sollerman , Jean J. Somalwar , Avery Wold

Observations of the luminous red nova AT 2021biy in the nearby galaxy NGC 4631

We present an observational study of the luminous red nova (LRN) AT\,2021biy in the nearby galaxy NGC\,4631. The field of the object was routinely imaged during the pre-eruptive stage by synoptic surveys, but the transient was detected only…

Solar and Stellar Astrophysics · Physics 2022-11-02 Y. -Z. Cai , A. Pastorello , M. Fraser , X. -F. Wang , A. V. Filippenko , A. Reguitti , K. C. Patra , V. P. Goranskij , E. A. Barsukova , T. G. Brink , N. Elias-Rosa , H. F. Stevance , W. Zheng , Y. Yang , K. E. Atapin , S. Benetti , T. J. L. de Boer , S. Bose , J. Burke , R. Byrne , E. Cappellaro , K. C. Chambers , W. -L. Chen , N. Emami , H. Gao , D. Hiramatsu , D. A. Howell , M. E. Huber , E. Kankare , P. L. Kelly , R. Kotak , T. Kravtsov , V. Yu. Lander , Z. -T. Li , C. -C. Lin , P. Lundqvist , E. A. Magnier , E. A. Malygin , N. A. Maslennikova , K. Matilainen , P. A. Mazzali , C. McCully , J. Mo , S. Moran , M. Newsome , D. V. Oparin , E. Padilla Gonzalez , T. M. Reynolds , N. I. Shatsky , S. J. Smartt , K. W. Smith , M. D. Stritzinger , A. M. Tatarnikov , G. Terreran , R. I. Uklein , G. Valerin , P. J. Vallely , O. V. Vozyakova , R. Wainscoat , S. -Y. Yan , J. -J. Zhang , T. -M. Zhang , S. G. Zheltoukhov , R. Dastidar , M. Fulton , L. Galbany , A. Gangopadhyay , H. -W. Ge , C. P. Gutiérrez , H. Lin , K. Misra , Z. -W. Ou , I. Salmaso , L. Tartaglia , L. Xiao , X. -H. Zhang

First hard X-ray detection and broad band X-ray study of the unidentified transient AX J1949.8+2534

We present the results from INTEGRAL and Swift/XRT observations of the hitherto poorly studied unidentified X-ray transient AX J1949.8+2534, and on archival multiwavelength observations of field objects. Bright hard X-ray outbursts have…

High Energy Astrophysical Phenomena · Physics 2017-06-28 V. Sguera , L. Sidoli , A. Paizis , N. Masetti , A. J. Bird , A. Bazzano

SRG/ART-XC discovery of SRGA J204318.2+443815: towards the complete population of faint X-ray pulsars

We report a discovery of a new long-period X-ray pulsar SRGA J204318.2+443815/SRGe J204319.0+443820 in the Be binary system. The source was found in the second all-sky survey by the Mikhail Pavlinsky telescope on board the SRG mission. The…

High Energy Astrophysical Phenomena · Physics 2022-05-18 A. A. Lutovinov , S. S. Tsygankov , I. A. Mereminskiy , S. V. Molkov , A. N. Semena , V. A. Arefiev , I. F. Bikmaev , A. A. Djupvik , M. R. Gilfanov , D. I. Karasev , I. Yu. Lapshov , P. S. Medvedev , A. E. Shtykovsky , R. A. Sunyaev , A. Yu. Tkachenko , S. Anand , M. C. B. Ashley , K. De , M. M. Kasliwal , S. R. Kulkarni , J. van Roestel , Y. Yao

Observations of the Disk/Jet Coupling of MAXI J1820+070 During its Descent to Quiescence

Black hole X-ray binaries in the quiescent state (Eddington ratios typically $\lesssim$10$^{-5}$) display softer X-ray spectra (photon indices $\Gamma\sim2$) compared to higher-luminosity black hole X-ray binaries in the hard state…

High Energy Astrophysical Phenomena · Physics 2021-03-17 A. W. Shaw , R. M. Plotkin , J. C. A. Miller-Jones , J. Homan , E. Gallo , D. M. Russell , J. A. Tomsick , P. Kaaret , S. Corbel , M. Espinasse , J. Bright

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

Hard state neutron star and black hole X-ray binaries in the radio:X-ray luminosity plane

Motivated by the large body of literature around the phenomenological properties of accreting black hole (BH) and neutron star (NS) X-ray binaries in the radio:X-ray luminosity plane, we carry out a comparative regression analysis on 36 BHs…

High Energy Astrophysical Phenomena · Physics 2018-05-23 Elena Gallo , Nathalie Degenaar , Jakob van den Eijnden

Identification of the High-Energy Gamma-Ray Source 3FGL J1544.6-1125 as a Transitional Millisecond Pulsar Binary in an Accreting State

We present X-ray, ultraviolet, and optical observations of 1RXS J154439.4-112820, the most probable counterpart of the unassociated Fermi LAT source 3FGL J1544.6-1125. The optical data reveal rapid variability, which is a feature of…

High Energy Astrophysical Phenomena · Physics 2015-06-24 Slavko Bogdanov , Jules P. Halpern

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

Millihertz X-ray variability during the 2019 outburst of black hole candidate Swift~J1357.2$-$0933

Swift J1357.2$-$0933 is a black-hole candidate X-ray transient, which underwent its third outburst in 2019, during which several multi-wavelength observations were carried out.~Here, we report results from the \emph{Neil Gehrels Swift} and…

High Energy Astrophysical Phenomena · Physics 2023-05-03 Aru Beri , Vishal Gaur , Phil Charles , David R. A. Williams , Jahanvi , John A. Paice , Poshak Gandhi , Diego Altamirano , Rob Fender , David A. Green , David Titterington

RXTE Studies of Long-Term X-ray Spectral Variations in 4U 1820-30

We present the results of detailed spectral studies of the ultra-compact low mass X-ray binary (LMXB) 4U 1820-30 carried out with the Rossi X-ray Timing Explorer (RXTE) during 1996-7. 4U 1820-30 is an ``atoll'' source X-ray burster (XRB)…

Astrophysics · Physics 2009-10-31 P. F. Bloser , J. E. Grindlay , P. Kaaret , W. Zhang , A. P. Smale , D. Barret

RXTE observations of the Low/Hard State X-ray Outburst of the new x-ray transient SWIFT J1753.5-0127

We present the results of the analysis of RXTE (Rossi X-ray Timing Explorer) observations of the new x-ray transient, SWIFT J1753.5-0127 during its outburst in July, 2005. The source was caught at the peak of the burst with a flux of…

Astrophysics · Physics 2008-11-26 M. C. Ramadevi , S. Seetha

Scary Barbie: An Extremely Energetic, Long-Duration Tidal Disruption Event Candidate Without a Detected Host Galaxy at z = 0.995

We report multi-wavelength observations and characterization of the ultraluminous transient AT 2021lwx (ZTF20abrbeie; aka ``Barbie'') identified in the alert stream of the Zwicky Transient Facility (ZTF) using a Recommender Engine For…

High Energy Astrophysical Phenomena · Physics 2023-06-09 Bhagya M. Subrayan , Dan Milisavljevic , Ryan Chornock , Raffaella Margutti , Kate D. Alexander , Vandana Ramakrishnan , Paul C. Duffell , Danielle A. Dickinson , Kyoung-Soo Lee , Dimitrios Giannios , Geoffery Lentner , Mark Linvill , Braden Garretson , Matthew J. Graham , Daniel Stern , Daniel Brethauer , Tien Duong , Wynn Jacobson-Galán , Natalie LeBaron , David Matthews , Huei Sears , Padma Venkatraman

INTEGRAL and XMM-Newton observations of AX J1845.0-0433

AX J1845.0-0433 is a transient high-mass X-ray binary discovered by ASCA. The source displays bright and short flares observed recently with INTEGRAL. The transient behaviour and the bright and short flares are studied in order to…

Astrophysics · Physics 2009-11-13 J. A. Zurita Heras , R. Walter