Zobrazeno 1 - 10
of 1 439
pro vyhledávání: '"Schwartz, D. P."'
Autor:
Migliori, G., Siemiginowska, A., Sobolewska, M., Cheung, C. C., Stawarz, Ł., Schwartz, D., Snios, B., Saxena, A., Kashyap, V.
We present the first X-ray observation at sub-arcsecond resolution of the high-redshift ($z=6.18$) radio-loud quasar CFHQS J142952+544717 (J1429). The ~100 net-count 0.3-7 keV spectrum obtained from $\sim 30$ ksec Chandra exposure is best fit by a si
Externí odkaz:
http://arxiv.org/abs/2305.07544
Milliarcsecond X-ray astrometry to resolve inner regions of AGN at $z>1$ using gravitational lensing
We report the localization of the X-ray emission from two strongly lensed AGN, CLASS B0712+472 ($z=1.34$) and CLASS B1608+656 ($z=1.394$). We obtain milliarcsecond X-ray astrometry by developing a novel method that combines parametric lens modelling
Externí odkaz:
http://arxiv.org/abs/2203.04245
Autor:
Worrall, D. M., Birkinshaw, M., Marshall, H. L., Schwartz, D. A., Siemiginowska, A., Wardle, J. F. C.
Despite the fact that kpc-scale inverse-Compton (iC) scattering of cosmic microwave background (CMB) photons into the X-ray band is mandated, proof of detection in resolved quasar jets is often insecure. High redshift provides favourable conditions d
Externí odkaz:
http://arxiv.org/abs/2007.03536
Publikováno v:
Journal of Asthma and Allergy, Vol Volume 16, Pp 9-21 (2023)
Laurent Portel,1 Caroline Fabry-Vendrand,2 Nathalie Texier,3 Déborah Schwartz,3 Audrey Capdepon,2 Gabriel Thabut,2 Didier Debieuvre4 1Service de Pneumologie, Centre Hospitalier Robert Boulin, Libourne, France; 2Astra Zeneca, Courbevoie, France; 3Kap
Externí odkaz:
https://doaj.org/article/7a221880da6f4c2784eddec360326b1f
Akademický článek
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Autor:
Marshall, H. L., Gelbord, J. M., Worrall, D. M., Birkinshaw, M., Schwartz, D. A., Jauncey, D. L., Griffiths, G., Murphy, D. W., Lovell, J. E. J., Perlman, E. S., Godfrey, L.
We present Chandra X-ray imaging of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like structure. X-rays are detected from 59% of 56 jets. No counterjets were detected. The core spectra are fitted by power law spectra with ph
Externí odkaz:
http://arxiv.org/abs/1802.04714
Publikováno v:
International Journal of Nephrology and Renovascular Disease, Vol Volume 15, Pp 207-214 (2022)
Julie Anne Ting,1 Susanna A McRae,1,2 Daniel Schwartz,1 Sean J Barbour,1 Maziar Riazy1,2 1Division of Nephrology, University of British Columbia, Vancouver, BC, V5Z 1M9, Canada; 2Department of Pathology, University of British Columbia, Vancouver, BC,
Externí odkaz:
https://doaj.org/article/caa0712fab5941a89e1b75abf2a1cccc
Autor:
McKeough, Kathryn, Siemiginowska, Aneta, Cheung, C. C., Stawarz, Lukasz, Kashyap, Vinay L., Stein, Nathan, Stampoulis, Vasileios, van Dyk, David A., Wardle, J. F. C., Lee, N. P., Harris, D. E., Schwartz, D. A., Donato, Davide, Maraschi, Laura, Tavecchio, Fabrizio
We analyze Chandra X-ray images of a sample of 11 quasars that are known to contain kiloparsec scale radio jets. The sample consists of five high-redshift (z >= 3.6) flat-spectrum radio quasars, and six intermediate redshift (2.1 < z < 2.9) quasars.
Externí odkaz:
http://arxiv.org/abs/1609.03425
Autor:
Godfrey, L. E. H., Lovell, J. E. J., Burke-Spolaor, S., Ekers, R., Bicknell, G. V., Birkinshaw, M., Worrall, D. M., Jauncey, D. L., Schwartz, D. A., Marshall, H. L., Gelbord, J., Perlman, E. S.
We present 18 GHz Australia Telescope Compact Array imaging of the Mpc-scale quasar jet PKS 0637-752 with angular resolution ~0.58 arcseconds. We draw attention to a spectacular train of quasi-periodic knots along the inner 11 arcseconds of the jet,
Externí odkaz:
http://arxiv.org/abs/1209.4637
Autor:
Cheung, C. C., Stawarz, L., Siemiginowska, A., Gobeille, D., Wardle, J. F. C., Harris, D. E., Schwartz, D. A.
We report the discovery of a one-sided 3.6" (24 kpc, projected) long jet in the high-redshift, z=4.72, quasar GB 1428+4217 in new Chandra X-ray and VLA radio observations. This is the highest redshift kiloparsec-scale X-ray/radio jet known. Analysis
Externí odkaz:
http://arxiv.org/abs/1208.0584