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We employ MUSE/VLT data to study the ionised and highly ionised gas phases of the feedback in Circinus, the closest Seyfert 2 galaxy to us. The analysis of the nebular emission allowed us to detect a remarkable high-ionisation gas outflow…

星系天体物理 · 物理学 2021-06-28 M. A. Fonseca-Faria , A. Rodríguez-Ardila , M. Contini , V. Reynaldi

We have discovered remarkable jet- and arc-like molecular features toward the rich and young stellar cluster Westerlund2. The jet has a length of ~100 pc and a width of ~10 pc, while the arc shows a crescent shape with a radius of ~30 pc.…

We present the results of simultaneous X-ray and radio observations of the peculiar Z-type neutron star X-ray binary Cir X-1, observed with the Rossi X-ray timing explorer satellite and the Australia Telescope Compact Array in 2000 October…

高能天体物理现象 · 物理学 2015-05-13 Paolo Soleri , Valeriu Tudose , Rob Fender , Michiel van der Klis , Peter G. Jonker

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…

We have made new CO observations of two molecular clouds, which we call "jet" and "arc" clouds, toward the stellar cluster Westerlund 2 and the TeV gamma-ray source HESS J1023-575. The jet cloud shows a linear structure from the position of…

We present observations of the neutron star X-ray binary and relativistic jet source Circinus X-1 made at 4.8 and 8.6 GHz with the Australia Telescope Compact Array during a time interval of almost 10 years. The system shows significant…

天体物理学 · 物理学 2009-11-13 V. Tudose , R. P. Fender , A. K. Tzioumis , R. E. Spencer , M. van der Klis

We investigated the interstellar medium properties of the disc and outflowing gas in the central regions of nine nearby Seyfert galaxies, all characterised by prominent outflows. These objects are part of the Measuring Active Galactic…

Dense outflowing gas, traced by transitions of molecules with large dipole moment, is important for understanding mass loss and feedback of massive star formation. HCN 3-2 and HCO$^+$ 3-2 are good tracers of dense outflowing molecular gas,…

星系天体物理 · 物理学 2024-06-14 Yani Xu , Junzhi Wang , Shu Liu , Juan Li , Yuqiang LI , Rui Luo , Chao Ou , Siqi Zheng , Yijia Liu

We present results of a spectral survey towards a dense molecular condensation and young stellar objects (YSOs) projected on the border of the HII region RCW 120 and discuss emission of 20 molecules which produce the brightest lines. The…

星系天体物理 · 物理学 2024-03-20 K. V. Plakitina , M. S. Kirsanova , S. V. Kalenskii , S. V. Salii , D. S. Wiebe

We present the results of the analysis of two Chandra observations of Circinus X-1 performed in 2007, for a total exposure time of ~50 ks. The source was observed with the High Resolution Camera during a long X-ray low-flux state of the…

We report the discovery of multi-scale X-ray jets from the accreting neutron star X-ray binary, Circinus X-1. The bipolar outflows show wide opening angles and are spatially coincident with the radio jets seen in new high-resolution radio…

Recent submillimeter observations have revealed signs of pc-scale molecular inflow and atomic outflow in the nearest Seyfert 2 galaxy, the Circinus galaxy. To verify the gas kinematics suggested by these observations, we performed molecular…

星系天体物理 · 物理学 2024-03-19 Shunsuke Baba , Keiichi Wada , Takuma Izumi , Yuki Kudoh , Kosei Matsumoto

Simultaneous modeling of the line and continuum emission from the nuclear region of the Circinus galaxy is presented. Composite models which include the combined effect of shocks and photoionization from the active center and from the…

天体物理学 · 物理学 2019-08-15 M. Contini , M. A. Prieto , S. M. Viegas

In this study, we investigate the line emissions from cold molecular gas based on our previous "radiation-driven fountain model" (Wada 2016), which reliably explains the spectral energy distribution of the nearest type 2 Seyfert galaxy, the…

星系天体物理 · 物理学 2018-01-24 Keiichi Wada , Ryosuke Fukushige , Takuma Izumi , Koji Tomisaka

We present the results of millimetre (33 and 35 GHz) and centimetre (2.1, 5.5 and 9.0 GHz) wavelength observations of the neutron star X-ray binary Circinus X-1, using the Australia Telescope Compact Array. We have used advanced calibration…

高能天体物理现象 · 物理学 2019-01-16 M. Coriat , R. Fender , C. Tasse , O. Smirnov , A. K. Tzioumis , J. W. Broderick

We present the results of the observations of the (J,K)=(1,1) and the (J,K)=(2,2) inversion transitions of the NH3 molecule toward a large sample of 40 regions with molecular or optical outflows, using the 37 m radio telescope of the…

太阳与恒星天体物理 · 物理学 2015-05-27 I. Sepúlveda , G. Anglada , R. Estalella , R. López , J. M. Girart , J. Yang

We present 12mm Mopra observations of dense molecular gas towards the W28 supernova remnant (SNR) field. The focus is on the dense molecular gas towards the TeV gamma-ray sources detected by the H.E.S.S. telescopes, which likely trace the…

星系天体物理 · 物理学 2015-05-20 B. Nicholas , G. Rowell , M. G. Burton , A. Walsh , Y. Fukui , A. Kawamura , S. Longmore , E. Keto

The results of Mopra molecular spectral line observations towards the supernova remnant HESSJ1731-347 (G353.6-0.7) and the unidentified gamma-ray source HESSJ1729-345 are presented. Dense molecular gas in three different velocity-bands…

We present 7mm Mopra observations of the dense molecular gas towards the W28 supernova remnant (SNR) field, following a previous 12mm line survey of this region. These observations take advantage of the 7mm beam size to probe the dense and…

高能天体物理现象 · 物理学 2015-05-30 B. P. Nicholas , G. Rowell , M. G. Burton , A. J. Walsh , Y. Fukui , A. Kawamura , N. I. Maxted

We present interferometric observations of the CN(1-0) line emission in Mrk231 and combine them with previous observations of CO and other H$_2$ gas tracers to study the physical properties of the massive molecular outflow. We find a strong…

星系天体物理 · 物理学 2020-01-29 Claudia Cicone , Roberto Maiolino , Susanne Aalto , Sebastien Muller , Chiara Feruglio
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