Zobrazeno 241 - 250
of 48 213
pro vyhledávání: '"Wu K"'
Publikováno v:
Phys. Rev. A 68 (2003) 022315
The separability and entanglement of quantum mixed states in $\Cb^2 \otimes \Cb^3 \otimes \Cb^N$ composite quantum systems are investigated. It is shown that all quantum states $\rho$ with positive partial transposes and rank $r(\rho)\leq N$ are sepa
Externí odkaz:
http://arxiv.org/abs/quant-ph/0308159
Publikováno v:
Mon.Not.Roy.Astron.Soc.345:639,2003
We present soft X-ray spectroscopy of the black hole binary LMC X-3 from the XMM-Newton Reflection Grating Spectrometer. The observations span the full range of spectral states seen in LMC X-3. The spectra are completely dominated by continuum emissi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307419
The X-ray sources observed in nearby galaxies show brightness distributions (log(N(>S))--log(S) curves) which can be described as single or broken power laws. Single power-law distributions are often found for sources in galaxies with vigorous ongoin
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302363
Autor:
Page, M. J., Breeveld, A. A., Soria, R., Wu, K., Branduardi-Raymont, G., Mason, K. O., Starling, R. L. C., Zane, S.
Publikováno v:
Astron.Astrophys. 400 (2003) 145-152
We present the soft X-ray spectrum of the LINER galaxy M81 derived from a long observation with the XMM RGS. The spectrum is dominated by continuum emission from the active nucleus, but also contains emission lines from Fe L, and H-like and He-like N
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301027
Autor:
Doroshenko, V., Poutanen, J., Heyl, J., Tsygankov, S. S., Berdyugin, A. V., Caiazzo, I., Forsblom, S. V., Gonz\ález-Caniulef, D., Kravtsov, V., Loktev, V. V., Lutovinov, A. A., Malacaria, C., Mereminskiy, I. A., Molkov, S. V., Mushtukov, A., Nitindala, A. P., Salganik, A., Santangelo, A., Suleimanov, V. F., Turolla, R., Veledina, A., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bianchi, S., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Di Marco, A., Donnarumma, I., Dovčiak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Matt, G., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgrò, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tent, A. F., Thomas, N. E., Tombesi, F., Trois, A., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., Zane, S.
We report on \ixpe observations of the Be-transient X-ray pulsar LS V +44 17/RX J0440.9+4431 at two luminosity levels during the giant outburst in January--February 2023. Considering the observed spectral variability and changes in the pulse profiles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::952e1f48ab60361d86011635b381f62b
http://arxiv.org/abs/2306.02116
http://arxiv.org/abs/2306.02116
Publikováno v:
Astron.Astrophys. 396 (2002) 615-622
We report the detection of circular polarization during the 1994 outburst of the Galactic microquasar GRO J1655-40. The circular polarization is clearly detected at 1.4 and 2.4GHz, but not at 4.8 and 8.4GHz, where its magnitude never exceeds 5 mJy. B
Externí odkaz:
http://arxiv.org/abs/astro-ph/0210031
We present the soft X-ray spectrum of the LINER galaxy M81 from a long observation with the XMM-Newton RGS. As well as continuum emission from the active nucleus, the spectrum shows emission lines from multi temperature collisionally ionized gas. The
Externí odkaz:
http://arxiv.org/abs/astro-ph/0203396
Autor:
Stern, Daniel, Tozzi, Paolo, Stanford, S. A., Rosati, Piero, Holden, Brad, Eisenhardt, Peter, Elston, Richard, Wu, K. L., Connolly, Andrew, Spinrad, Hyron, Dawson, Steve, Dey, Arjun, Chaffee, Frederic H.
Publikováno v:
Astron.J. 123 (2002) 2223-2245
We present our first results on field X-ray sources detected in a deep, 184.7 ks observation with the ACIS-I camera on Chandra. The observations target the Lynx field of SPICES, and contains three known X-ray-emitting clusters out to z=1.27. Not incl
Externí odkaz:
http://arxiv.org/abs/astro-ph/0203392
Publikováno v:
Mon.Not.Roy.Astron.Soc. 333 (2002) 575
We present observations of the proposed double degenerate polar RX J1914+24. Our optical and infrared spectra show no emission lines. This, coupled with the lack of significant levels of polarisation provide difficulties for a double degenerate polar
Externí odkaz:
http://arxiv.org/abs/astro-ph/0202281
Autor:
Stern, Daniel, Moran, Edward C., Coil, Alison L., Connolly, Andrew, Davis, Marc, Dawson, Steve, Dey, Arjun, Eisenhardt, Peter, Elston, Richard, Graham, James R., Harrison, Fiona, Helfand, David J., Holden, Brad, Mao, Peter, Rosati, Piero, Spinrad, Hyron, Stanford, S. A., Tozzi, Paolo, Wu, K. L.
Publikováno v:
Astrophys.J. 568 (2002) 71-81
We report on observations of a TypeII quasar at redshift z=3.288, identified as a hard X-ray source in a 185 ks observation with the Chandra X-ray Observatory and as a high-redshift photometric candidate from deep, multiband optical imaging. CXOJ0848
Externí odkaz:
http://arxiv.org/abs/astro-ph/0111513