相关论文: The young massive stellar cluster Westerlund 1 in …

A deep spectromorphological study of the $\gamma$-ray emission surrounding the young massive stellar cluster Westerlund 1

Young massive stellar clusters are extreme environments and potentially provide the means for efficient particle acceleration. Indeed, they are increasingly considered as being responsible for a significant fraction of cosmic rays (CRs)…

高能天体物理现象 · 物理学 2022-11-11 F. Aharonian , H. Ashkar , M. Backes , V. Barbosa Martins , Y. Becherini , D. Berge , B. Bi , M. Böttcher , M. de Bony de Lavergne , F. Bradascio , R. Brose , F. Brun , T. Bulik , C. Burger-Scheidlin , F. Cangemi , S. Caroff , S. Casanova , M. Cerruti , T. Chand , S. Chandra , A. Chen , O. Chibueze , P. Cristofari , J. Damascene Mbarubucyeye , A. Djannati-Ataï , J. -P. Ernenwein , K. Feijen , G. Fichet de Clairfontaine , G. Fontaine , S. Funk , S. Gabici , Y. A. Gallant , S. Ghafourizadeh , G. Giavitto , L. Giunti , D. Glawion , J. F. Glicenstein , P. Goswami , M. -H. Grondin , L. K. Härer , M. Haupt , J. A. Hinton , M. Hörbe , W. Hofmann , T. L. Holch , M. Holler , D. Horns , M. Jamrozy , V. Joshi , I. Jung-Richardt , E. Kasai , K. Katarzyński , U. Katz , B. Khélifi , W. Kluźniak , Nu. Komin , K. Kosack , D. Kostunin , G. Kukec Mezek , 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 , V. Marandon , P. Marchegiani , A. Marcowith , 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 , S. Ohm , L. Olivera-Nieto , E. de Ona Wilhelmi , M. Ostrowski , S. Panny , M. Panter , R. D. Parsons , G. Peron , D. A. Prokhorov , G. Pühlhofer , M. Punch , A. Quirrenbach , R. Rauth , P. Reichherzer , A. Reimer , O. Reimer , M. Renaud , B. Reville , F. Rieger , G. Rowell , B. Rudak , E. Ruiz-Velasco , V. Sahakian , H. Salzmann , D. A. Sanchez , A. Santangelo , M. Sasaki , F. Schüssler , H. M. Schutte , U. Schwanke , J. N. S. Shapopi , A. Specovius , S. Spencer , Ł. Stawarz , R. Steenkamp , S. Steinmassl , C. Steppa , I. Sushch , H. Suzuki , T. Takahashi , T. Tanaka , R. Terrier , C. Thorpe-Morgan , M. Tsirou , N. Tsuji , R. Tuffs , T. Unbehaun , C. van Eldik , B. van Soelen , M. Vecchi , J. Veh , C. Venter , J. Vink , S. J. Wagner , R. White , A. Wierzcholska , Yu Wun Wong , M. Zacharias , D. Zargaryan , A. A. Zdziarski , S. J. Zhu , S. Zouari , N. Żywucka , R. Blackwell , C. Braiding , M. Burton , K. Cubuk , M. Filipović , N. Tothill , G. Wong

On the hadronic origin of the very high energy $\gamma$-ray emission surrounding the young massive stellar cluster Westerlund 1

The Westerlund 1 (Wd 1) is the most massive known young star cluster in the Galaxy, and an extended $\gamma$-ray source HESS J1646-458 surrounding it has been detected up to 80 TeV in the very high energy, implying that cosmic rays (CRs)…

高能天体物理现象 · 物理学 2026-01-27 Zhaodong Shi , Rui-zhi Yang

Understanding the TeV $\gamma$-ray emission surrounding the young massive star cluster Westerlund 1

Context: Young massive star clusters (YMCs) have come increasingly into the focus of discussions on the origin of galactic cosmic rays (CRs). The proposition of CR acceleration inside superbubbles (SBs) blown by the strong winds of these…

高能天体物理现象 · 物理学 2023-03-01 Lucia K. Härer , Brian Reville , Jim Hinton , Lars Mohrmann , Thibault Vieu

H.E.S.S. observations of massive stellar clusters

Stellar clusters are potential acceleration sites of very-high-energy (VHE, E > 100GeV) particles since they host supernova remnants (SNRs) and pulsar wind nebulae (PWNe). Additionally, in stellar clusters, particles can also be accelerated…

高能天体物理现象 · 物理学 2009-07-13 Stefan Ohm , Dieter Horns , Olaf Reimer , Jim Hinton , Gavin Rowell , Emma de Oña Wilhelmi , Milton Virgilio Fernandes , Fabio Acero , Alexandre Marcowith

Gamma-ray emission from the Westerlund 1 region

Westerlund 1 (Wd 1) is the most massive stellar cluster in the Galaxy and associated with an extended region of TeV emission. Here we report the results of a search for GeV gamma-ray emission in this region. The analysis is based on ~4.5…

高能天体物理现象 · 物理学 2015-06-16 S. Ohm , J. A. Hinton , R. White

Discovery of extended VHE \gamma-ray emission from the vicinity of the young massive stellar cluster Westerlund 1

Results obtained in very-high-energy (VHE; E > 100 GeV) \gamma-ray observations performed with the H.E.S.S. telescope array are used to investigate particle acceleration processes in the vicinity of the young massive stellar cluster…

高能天体物理现象 · 物理学 2012-01-19 HESS Collaboration , A. Abramowski , F. Acero , F. Aharonian , A. G. Akhperjanian , G. Anton , A. Balzer , A. Barnacka , U. Barres de Almeida , Y. Becherini , J. Becker , B. Behera , K. Bernlöhr , E. Birsin , J. Biteau , A. Bochow , C. Boisson , J. Bolmont , P. Bordas , J. Brucker , F. Brun , P. Brun , T. Bulik , I. Büsching , S. Carrigan , S. Casanova , M. Cerruti , P. M. Chadwick , A. Charbonnier , R. C. G. Chaves , A. Cheesebrough , L. -M. Chounet , A. C. Clapson , G. Coignet , G. Cologna , J. Conrad , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange , C. Deil , H. J. Dickinson , A. Djannati-Ataï , W. Domainko , L. O'C. Drury , F. Dubois , G. Dubus , K. Dutson , J. Dyks , M. Dyrda , K. Egberts , P. Eger , P. Espigat , L. Fallon , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , A. Fiasson , G. Fontaine , A. Förster , M. Füßling , Y. A. Gallant , H. Gast , L. Gérard , D. Gerbig , B. Giebels , J. F. Glicenstein , B. Glück , P. Goret , D. Göring , S. Häffner , J. D. Hague , D. Hampf , M. Hauser , S. Heinz , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , A. Hoffmann , W. Hofmann , P. Hofverberg , M. Holler , D. Horns , A. Jacholkowska , O. C. de Jager , C. Jahn , M. Jamrozy , I. Jung , M. A. Kastendieck , K. Katarzynski , U. Katz , S. Kaufmann , D. Keogh , D. Khangulyan , B. Khélifi , D. Klochkov , W. Kluźniak , T. Kneiske , Nu. Komin , K. Kosack , R. Kossakowski , H. Laffon , G. Lamanna , D. Lennarz , T. Lohse , A. Lopatin , C. -C. Lu , V. Marandon , A. Marcowith , J. Masbou , D. Maurin , N. Maxted , M. Mayer , T. J. L. McComb , M. C. Medina , J. Méhault , R. Moderski , E. Moulin , C. L. Naumann , M. Naumann-Godo , M. de Naurois , D. Nedbal , D. Nekrassov , N. Nguyen , B. Nicholas , J. Niemiec , S. J. Nolan , S. Ohm , E. de Ona Wilhelmi , B. Opitz , M. Ostrowski , I. Oya , M. Panter , M. Paz Arribas , G. Pedaletti , G. Pelletier , P. -O. Petrucci , S. Pita , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Raue , S. M. Rayner , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger , J. Ripken , L. Rob , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , J. Ruppel , V. Sahakian , D. Sanchez , A. Santangelo , R. Schlickeiser , F. M. Schöck , A. Schulz , U. Schwanke , S. Schwarzburg , S. Schwemmer , F. Sheidaei , M. Sikora , J. L. Skilton , H. Sol , G. Spengler , L. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , K. Stycz , I. Sushch , A. Szostek , J. -P. Tavernet , R. Terrier , M. Tluczykont , K. Valerius , C. van Eldik , G. Vasileiadis , C. Venter , J. P. Vialle , A. Viana , P. Vincent , H. J. Völk , F. Volpe , S. Vorobiov , M. Vorster , S. J. Wagner , M. Ward , R. White , A. Wierzcholska , M. Zacharias , A. Zajczyk , A. A. Zdziarski , A. Zech , H. -S. Zechlin

HESS J1023-575: Non-thermal particle acceleration associated with the young stellar cluster Westerlund 2

The results from H.E.S.S. observations towards Westerlund 2 are presented. The detection of very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2 in the HII complex RCW49 by H.E.S.S. provides ample evidence that…

天体物理学 · 物理学 2019-08-13 O. Reimer , J. Hinton , W. Hofmann , S. Hoppe , C. Masterson , M. Raue

Diffuse gamma-ray emission in the vicinity of young star cluster Westerlund 2

We report the results of our analysis of the publicly available data obtained by the Large Area Telescope (LAT) on board of the Fermi satellite towards the direction of the young massive star cluster Westerlund 2. We found significant…

高能天体物理现象 · 物理学 2018-04-04 Rui-zhi Yang , Emma de Oña Wilhelmi , Felix Aharonian

Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2

Results from gamma-ray observations by the H.E.S.S. telescope array in the direction of the young stellar cluster Westerlund 2 are presented. Stereoscopic imaging of Cherenkov light emission of gamma-ray induced showers in the atmosphere is…

天体物理学 · 物理学 2008-11-26 HESS Collaboration , F. Aharonian

Westerlund 1 and its Galactic siblings -Observation confronts Theory

Because of their large number of stars spread over the entire stellar mass spectrum, starburst clusters are highly suitable to benchmark and calibrate star formation models and theories. Among the handful of Galactic starburst clusters,…

天体物理学 · 物理学 2008-03-14 Wolfgang Brandner

Revisiting the Westerlund 2 Field with the H.E.S.S. Telescope Array

Aims. Previous observations with the H.E.S.S. telescope array revealed the existence of extended very-high-energy (VHE; E>100 GeV) {\gamma}-ray emission, HESS J1023-575, coincident with the young stellar cluster Westerlund 2. At the time of…

高能天体物理现象 · 物理学 2015-05-20 The HESS Collaboration , A. Abramowski , F. Acero , F. Aharonian , A. G. Akhperjanian , G. Anton , A. Barnacka , U. Barres de Almeida , A. R. Bazer-Bachi , Y. Becherini , J. Becker , B. Behera , K. Bernlöhr , A. Bochow , C. Boisson , J. Bolmont , P. Bordas , V. Borrel , J. Brucker , F. Brun , P. Brun , T. Bulik , I. Büsching , T. Boutelier , S. Casanova , M. Cerruti , P. M. Chadwick , A. Charbonnier , R. C. G. Chaves , A. Cheesebrough , J. Conrad , L. -M. Chounet , A. C. Clapson , G. Coignet , M. Dalton , M. K. Daniel , I. D. Davids , B. Degrange , C. Deil , H. J. Dickinson , A. Djannati-Ataï , W. Domainko , L. O'C. Drury , F. Dubois , G. Dubus , J. Dyks , M. Dyrda , K. Egberts , P. Eger , P. Espigat , L. Fallon , C. Farnier , S. Fegan , F. Feinstein , M. V. Fernandes , A. Fiasson , A. Förster , G. Fontaine , M. Füßling , S. Gabici , Y. A. Gallant , L. Gérard , D. Gerbig , B. Giebels , J. F. Glicenstein , B. Glück , P. Goret , D. Göring , J. D. Hague , D. Hampf , M. Hauser , S. Heinz , G. Heinzelmann , G. Henri , G. Hermann , J. A. Hinton , A. Hoffmann , W. Hofmann , P. Hofverberg , M. Holleran , S. Hoppe , D. Horns , A. Jacholkowska , O. C. de Jager , C. Jahn , I. Jung , K. Katarzyński , U. Katz , S. Kaufmann , M. Kerschhaggl , D. Khangulyan , B. Khélifi , D. Keogh , D. Klochkov , W. Kluźniak24 , T. Kneiske , Nu. Komin , K. Kosack , R. Kossakowski , G. Lamanna , J. -P. Lenain , D. Lennarz , T. Lohse , C. -C. Lu , V. Marandon , A. Marcowith , J. Masbou , D. Maurin , T. J. L. McComb , M. C. Medina , J. Méhault , R. Moderski , E. Moulin , M. Naumann-Godo , M. de Naurois , D. Nedbal , D. Nekrassov , N. Nguyen , B. Nicholas , J. Niemiec , S. J. Nolan , S. Ohm , J-F. Olive , E. de Oña Wilhelmi , B. Opitz , K. J. Orford , M. Ostrowski , M. Panter , M. Paz Arribas , G. Pedaletti1 , G. Pelletier , P. -O. Petrucci , S. Pita1 , G. Pühlhofer , M. Punch , A. Quirrenbach , M. Raue , S. M. Rayner , A. Reimer , O. Reimer , M. Renaud , R. de los Reyes , F. Rieger1 , J. Ripken , L. Rob , S. Rosier-Lees , G. Rowell , B. Rudak , C. B. Rulten , J. Ruppel , F. Ryde , V. Sahakian , A. Santangelo , R. Schlickeiser , F. M. Schöck , A. Schönwald , U. Schwanke , S. Schwarzburg , S. Schwemmer , A. Shalchi , I. Sushch , M. Sikora , J. L. Skilton , H. Sol , G. Spengler , Ł. Stawarz , R. Steenkamp , C. Stegmann , F. Stinzing , A. Szostek , P. H. Tam , J. -P. Tavernet , R. Terrier , O. Tibolla , M. Tluczykont , K. Valerius , C. van Eldik , G. Vasileiadis , C. Venter , J. P. Vialle , A. Viana , P. Vincent , M. Vivier , H. J. Völk , F. Volpe , S. Vorobiov , S. J. Wagner , M. Ward , A. A. Zdziarski , A. Zech , H. -S. Zechlin , Y. Fukui , N. Furukawa , A. Ohama , H. Sano , J. Dawson , A. Kawamura

Probing the hadronic nature of the gamma-ray emission associated with Westerlund 2

Star-forming regions have been proposed as potential Galactic cosmic-ray accelerators for decades. Cosmic ray acceleration can be probed through observations of gamma-rays produced in inelastic proton-proton collisions, at GeV and TeV…

高能天体物理现象 · 物理学 2021-09-17 Emma de Ona Wilhelmi , Enrique Mestre , Diego F. Torres , Tim Lukas Holch , Ullrich Schwanke , Felix Aharonian , Pablo Saz Parkinson , Ruizhi Yang , Roberta Zanin

The Environment around the Young Massive Star Cluster RSGC 1 and HESS J1837-069

We report on Mopra observations toward the young massive star cluster RSGC 1, adjoined by, and possibly associated with the gamma-ray source HESS J1837-069. We measure the CO (J=1-0) distribution around the cluster and gamma-ray source, and…

星系天体物理 · 物理学 2015-06-17 Yutaka Fujita , Hiroyuki Nakanishi , Erik Muller , Naoto Kobayashi , Masao Saito , Chikako Yasui , Hiroki Kikuchi , Keigo Yoshinaga

Probing the hadronic nature of the gamma-ray emission associated with Westerlund 2

Star-forming regions have been proposed as potential Galactic cosmic-ray accelerators for decades. Cosmic-ray acceleration can be probed through observations of gamma-rays produced in inelastic proton-proton collisions, at GeV and TeV…

高能天体物理现象 · 物理学 2021-05-26 Enrique Mestre , Emma de Ona Wilhelmi , Diego F. Torres , Tim Lukas Holch , Ullrich Schwanke , Felix Aharonian , Pablo Saz Parkinson , Ruizhi Yang , Roberta Zanin

Discovery of Molecular and Atomic Gas associated with HESS J1646-458 (Westerlund 1): Spatial TeV Gamma-Ray and Interstellar Proton Correspondence

We report CO and HI studies of molecular and atomic gas toward the TeV gamma-ray source HESS J1646$-$458, widely considered to be associated with the young massive cluster Westerlund 1 (Wd1). We found that molecular clouds at…

高能天体物理现象 · 物理学 2026-05-26 H. Sano , Y. Fukui , S. Fujimori , T. Murase , R. Z. E. Alsaberi , M. D. Filipović , G. Rowell , M. Aruga , Y. Asano , R. G. Bhuvana , F. Demachi , S. Einecke , N. Fukaya , R. Hamada , H. Inoue , T. Kamazaki , S. Lazarević , T. Minamidani , Z. J. Smeaton , H. Sudou , K. Tachihara , H. Takaba , K. Tsuge , R. I. Yamada

VHE gamma-rays from Westerlund 2 and implications for the inferred energetics

The H.E.S.S. collaboration recently reported the discovery of VHE gamma-ray emission coincident with the young stellar cluster Westerlund 2. This system is known to host a population of hot, massive stars, and, most particularly, the WR…

天体物理学 · 物理学 2007-10-19 O. Reimer , F. Aharonian , J. Hinton , W. Hofmann , S. Hoppe , M. Raue , A. Reimer

Diffuse Thermal X-Ray Emission in the Core of the Young Massive Cluster Westerlund 1

We present an analysis of the diffuse hard X-ray emission in the core of the young massive Galactic cluster Westerlund 1 based on a 48 ks XMM-Newton observation. Chandra results for the diffuse X-ray emission have indicated a soft thermal…

高能天体物理现象 · 物理学 2011-06-15 P. J. Kavanagh , L. Norci , E. J. A. Meurs

Intermediate to low-mass stellar content of Westerlund 1

We have analysed near-infrared NTT/SofI observations of the starburst cluster Westerlund 1, which is among the most massive young clusters in the Milky Way. A comparison of colour-magnitude diagrams with theoretical main-sequence and…

天体物理学 · 物理学 2009-11-13 Wolfgang Brandner , J. Simon Clark , Andrea Stolte , Rens Waters , Ignacio Negueruela , Simon P. Goodwin

Gamma rays from star clusters and implications for the origin of Galactic cosmic rays

Context. Star clusters are often invoked as contributors to the flux of Galactic cosmic rays and as sources potentially able to accelerate particles to $\sim$PeV energies. The gamma radiation with $E\gtrsim$ TeV recently observed from…

高能天体物理现象 · 物理学 2025-01-28 Pasquale Blasi

Suzaku Observation of the Diffuse X-Ray Emission from the Open Cluster Westerlund 2: a Hypernova Remnant?

We present the analysis of Suzaku observations of the young open cluster Westerlund 2, which is filled with diffuse X-ray emission. We found that the emission consists of three thermal components or two thermal and one non-thermal…

高能天体物理现象 · 物理学 2015-05-13 Yutaka Fujita , Kiyoshi Hayashida , Hiroaki Takahashi , Fumio Takahara