Zobrazeno 1 - 10
of 1 044
pro vyhledávání: '"Hwang U"'
Autor:
Borkowski, K. J., Gwynne, P., Reynolds, S. P., Green, D. A., Hwang, U., Petre, R., Willett, R.
The youngest Galactic supernova remnant (SNR) G1.9+0.3, produced by a (probable) SN Ia that exploded $\sim 1900$ CE, is strongly asymmetric at radio wavelengths, much brighter in the north, but bilaterally symmetric in X-rays. We present the results
Externí odkaz:
http://arxiv.org/abs/1702.06555
Autor:
Borkowski, K. J., Reynolds, S. P., Green, D. A., Hwang, U., Petre, R., Krishnamurthy, K., Willett, R.
We report measurements of X-ray expansion of the youngest Galactic supernova remnant, G1.9+0.3, using Chandra observations in 2007, 2009, and 2011. The measured rates strongly deviate from uniform expansion, decreasing radially by about 60% along the
Externí odkaz:
http://arxiv.org/abs/1406.2287
Autor:
Borkowski, K. J., Reynolds, S. P., Hwang, U., Green, D. A., Petre, R., Krishnamurthy, K., Willett, R.
G1.9+0.3 is the youngest known Galactic supernova remnant (SNR), with an estimated supernova (SN) explosion date of about 1900, and most likely located near the Galactic Center. Only the outermost ejecta layers with free-expansion velocities larger t
Externí odkaz:
http://arxiv.org/abs/1305.7399
Autor:
Carlton, A. K., Borkowski, K. J., Reynolds, S. P., Hwang, U., Petre, R., Green, D. A., Krishnamurthy, K., Willett, R.
We present a measurement of the expansion and brightening of G1.9+0.3, the youngest Galactic supernova remnant, comparing Chandra X-ray images obtained in 2007 and 2009. A simple uniform expansion model describes the data well, giving an expansion ra
Externí odkaz:
http://arxiv.org/abs/1106.4498
We present Spitzer IRS and IRAC observations of the young supernova remnant E0102 (SNR 1E0102.2-7219) in the Small Magellanic Cloud. The infrared spectra show strong ejecta lines of Ne and O, with the [Ne II] line at 12.8 microns having a large veloc
Externí odkaz:
http://arxiv.org/abs/0905.0497
The discovery of the youngest Galactic supernova remnant (SNR) G1.9+0.3 has allowed a look at a stage of SNR evolution never before observed. We analyze the 50 ks Chandra observation with particular regard to spectral variations. The very high column
Externí odkaz:
http://arxiv.org/abs/0903.1870
Autor:
Furuzawa, A., Ueno, D., Hayato, A., Ozawa, M., Tamagawa, T., Bamba, A., Hughes, J. P., Kunieda, H., Makishima, K., Holt, S. S., Hwang, U., Kinugasa, K., Petre, R., Tamura, K., Tsunemi, H., Yamauchi, S.
We use \suzaku observations to measure the spatial variation of the Fe K$\alpha$ line with radius in the \tycho supernova remnant. The Fe line widths show a significant decrease from a FWHM value of 210 eV at the center to 130 eV at the rim. Over the
Externí odkaz:
http://arxiv.org/abs/0902.3049
Autor:
Rho, J., Reach, W. T., Tappe, A., Rudnick, L., Kozasa, T., Hwang, U., Andersen, M., Gomez, H., DeLaney, T., Dunne, L., Slavin, J.
We present dust features and masses observed in young supernova remnants (SNRs) with Spitzer IRS mapping and staring observations of four youngest supernova remnants: SNR 1E102.2-7219 (E0102) in the SMC, Cas A and G11.2-0.3 in our Galaxy, and N132D i
Externí odkaz:
http://arxiv.org/abs/0901.1699
Autor:
Tamagawa, T., Hayato, A., Nakamura, S., Terada, Y., Bamba, A., Hiraga, J. S., Hughes, J. P., Hwang, U., Kataoka, J., Kinugasa, K., Kunieda, H., Tanaka, T., Tsunemi, H., Ueno, M., Holt, S. S., Kokubun, M., Miyata, E., Szymkowiak, A., Takahashi, T., Tamura, K., Ueno, D., Makishima, K.
Publikováno v:
Publ.Astron.Soc.Jap. 61 (2009) 167-174
Tycho's supernova remnant was observed by the XIS and HXD instruments onboard the Suzaku satellite on 2006 June 26-29 for 92 ks. The spectrum up to 30 keV was well fitted with a two-component model, consisting of a power-law with photon index of 2.7
Externí odkaz:
http://arxiv.org/abs/0805.3377
Autor:
Katsuda, S., Mori, K., Tsunemi, H., Park, S., Hwang, U., Burrows, D. N., Hughes, J. P., Slane, P. O.
Publikováno v:
Astrophys.J.678:297-302,2008
We report on the discovery of fast-moving X-ray--emitting ejecta knots in the Galactic Oxygen-rich supernova remnant Puppis A from XMM-Newton observations. We find an X-ray knotty feature positionally coincident with an O-rich fast-moving optical fil
Externí odkaz:
http://arxiv.org/abs/0805.1369