Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Royster M"'
Autor:
Yusef-Zadeh, F., Zhao, Jun-Hui, Arendt, R., Wardle, M., Royster, M., Rudnick, L., Michail, J.
We investigate the nature of a Galactic center source, G0.17+0.15, lying along the northern extension of the Radio Arc near l~0.2deg. G0.17+0.15 is an HII region located toward the eastern edge of the radio bubble, embedded within the highly polarize
Externí odkaz:
http://arxiv.org/abs/2402.12450
Autor:
Yusef-Zadeh, F., Zhao, Jun-Hui, Arendt, R., Wardle, M., Heinke, C. O., Royster, M., Lang, C., Michail, J.
The Snake is a remarkable Galactic center radio filament with a morphology characterized by two kinks along its $\sim 20'$ extent. The major and minor kinks are located where the filament is most distorted from a linear magnetized structure running p
Externí odkaz:
http://arxiv.org/abs/2402.12441
Autor:
Yusef-Zadeh, F., Wardle, M., Heinke, C., Arendt, R., Royster, M., Heywood, I., Cotton, W., Camilo, F., Michail, J.
The recent detection of an X-ray filament associated with the radio filament G0.173-0.42 adds to four other nonthermal radio filaments with X-ray counterparts, amongst the more than 100 elongated radio structures that have been identified as synchrot
Externí odkaz:
http://arxiv.org/abs/2010.09739
Autor:
Yusef-Zadeh, F., Royster, M., Wardle, M., Cotton, W., Kunneriath, D., Heywood, I., Michail, J.
We study the environment of Sgr A* using spectral and continuum observations with the ALMA and VLA. Our analysis of sub-arcsecond H30alpha, H39alpha, H52alpha and H56alpha line emission towards Sgr A* confirm the recently published broad peak ~500 km
Externí odkaz:
http://arxiv.org/abs/2008.04317
Recent results from multi-wavelength observations of the inner few hundred pc of the Galactic center have added two new characteristics to the ISM in this unique region. One is the cosmic ray ionization rate derived from H$_3^+$ measurements is at le
Externí odkaz:
http://arxiv.org/abs/1912.11057
Publikováno v:
ApJL 850, L30, December 1, 2017
We report the discovery of 11 bipolar outflows within a projected distance of 1pc from Sgr A* based on deep ALMA observations of $^{13}$CO, H30$\alpha$ and SiO (5-4) lines with sub-arcsecond and $\sim1.3$ km/s, resolutions. These unambiguous signatur
Externí odkaz:
http://arxiv.org/abs/1711.10573
Autor:
Yusef-Zadeh, F., Schödel, R., Wardle, M., Bushouse, H., Cotton, W., Royster, M. J., Kunneriath, D., Roberts, D. A., Gallego-Cano, E.
We present 44 and 226 GHz observations of the Galactic center within 20$"$ of Sgr A*. Millimeter continuum emission at 226 GHz is detected from eight stars that have previously been identified at near-IR and radio wavelengths. We also detect a 5.8 mJ
Externí odkaz:
http://arxiv.org/abs/1706.02750
Autor:
Yusef-Zadeh, F., Wardle, M., Cotton, W., Schödel, R., Royster, M. J., Roberts, D. A., Kunneriath, D.
We present radio and mm continuum observations of the Galactic center taken with the VLA and ALMA at 44 and 226 GHz, respectively. We detect radio and mm emission from IRS 3, lying ~4.5" NW of Sgr A*, with a spectrum that is consistent with the photo
Externí odkaz:
http://arxiv.org/abs/1702.02196
Autor:
Yusef-Zadeh, F., Cotton, W., Wardle, M., Royster, M. J., Kunneriath, D., Roberts, D. A., Wootten, A., Schödel, R.
Using the VLA, we recently detected a large number of protoplanetary disk (proplyd) candidates lying within a couple of light years of the massive black hole Sgr A*. The bow-shock appearance of proplyd candidates point toward the young massive stars
Externí odkaz:
http://arxiv.org/abs/1701.05939
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