Zobrazeno 1 - 10
of 330
pro vyhledávání: '"Steenbrugge, K. C."'
Autor:
Costantini, E., Kriss, G., Kaastra, J. S., Bianchi, S., Branduardi-Raymont, G., Cappi, M., De Marco, B., Ebrero, J., Mehdipour, M., Petrucci, P. -O., Paltani, S., Ponti, G., Steenbrugge, K. C., Arav, N.
Publikováno v:
A&A 595, A106 (2016)
We model the broad emission lines present in the optical, UV and X-ray spectra of Mrk 509, a bright type 1 Seyfert galaxy. The broad lines were simultaneously observed during a large multiwavelength campaign, using the XMM-Newton-OM for the optical l
Externí odkaz:
http://arxiv.org/abs/1606.06579
Autor:
Cappi, M., De Marco, B., Ponti, G., Ursini, F., Petrucci, P. -O., Bianchi, S., Kaastra, J. S., Kriss, G. A., Mehdipour, M., Whewell, M., Arav, N., Behar, E., Boissay, R., Branduardi-Raymont, G., Costantini, E., Ebrero, J., Di Gesu, L., Harrison, F. A., Kaspi, S., Matt, G., Paltani, S., Peterson, B. M., Steenbrugge, K. C., Walton, D. J.
In 2013 we conducted a large multi-wavelength campaign on the archetypical Seyfert 1 galaxy NGC 5548. Unexpectedly, this usually unobscured source appeared strongly absorbed in the soft X-rays during the entire campaign, and signatures of new and str
Externí odkaz:
http://arxiv.org/abs/1604.01777
Autor:
Mehdipour, M., Kaastra, J. S., Kriss, G. A., Cappi, M., Petrucci, P. -O., De Marco, B., Ponti, G., Steenbrugge, K. C., Behar, E., Bianchi, S., Branduardi-Raymont, G., Costantini, E., Ebrero, J., Di Gesu, L., Matt, G., Paltani, S., Peterson, B. M., Ursini, F., Whewell, M.
Publikováno v:
A&A 588, A139 (2016)
We present our investigation into the long-term variability of the X-ray obscuration and optical-UV-X-ray continuum in the Seyfert 1 galaxy NGC 5548. In 2013 and 2014, the Swift observatory monitored NGC 5548 on average every day or two, with archiva
Externí odkaz:
http://arxiv.org/abs/1602.03017
Autor:
Ebrero, J., Kaastra, J. S., Kriss, G. A., Di Gesu, L., Costantini, E., Mehdipour, M., Bianchi, S., Cappi, M., Boissay, R., Branduardi-Raymont, G., Petrucci, P. -O., Ponti, G., Pozo-Nunez, F., Seta, H., Steenbrugge, K. C., Whewell, M.
(Abridged) The archetypal Seyfert 1 galaxy NGC 5548 was observed in 2013-2014 in the context of an extensive multiwavelength campaign, which revealed the source to be in an extraordinary state of persistent heavy obscuration. We re-analyzed the archi
Externí odkaz:
http://arxiv.org/abs/1601.02385
Autor:
Whewell, M., Branduardi-Raymont, G., Kaastra, J. S., Mehdipour, M., Steenbrugge, K. C., Bianchi, S., Behar, E., Ebrero, J., Cappi, M., Costantini, E., De Marco, B., Di Gesu, L., Kriss, G. A., Paltani, S., Peterson, B. M., Petrucci, P. -O, Pinto, C., Ponti, G.
Publikováno v:
A&A 581, A79 (2015)
Context. Our consortium performed an extensive multi-wavelength campaign of the nearby Seyfert 1 galaxy NGC 5548 in 2013-14. The source appeared unusually heavily absorbed in the soft X-rays, and signatures of outflowing absorption were also present
Externí odkaz:
http://arxiv.org/abs/1509.00274
Autor:
Di Gesu, L., Costantini, E., Ebrero, J., Mehdipour, M., Kaastra, J. S., Ursini, F., Petrucci, P. O., Cappi, M., Kriss, G. A., Bianchi, S., Branduardi-Raymont, G., De Marco, B., De Rosa, A., Kaspi, S., Paltani, S., Pinto, C., Ponti, G., Steenbrugge, K. C., Whewell, M.
During an extensive multiwavelength campaign that we performed in 2013-14 the prototypical Seyfert 1 galaxy NGC 5548 has been found in an unusual condition of heavy and persistent obscuration. The newly discovered "obscurer" absorbs most of the soft
Externí odkaz:
http://arxiv.org/abs/1505.02562
Autor:
Ursini, F., Boissay, R., Petrucci, P. -O., Matt, G., Cappi, M., Bianchi, S., Kaastra, J., Harrison, F., Walton, D. J., di Gesu, L., Costantini, E., De Marco, B., Kriss, G. A., Mehdipour, M., Paltani, S., Peterson, B. M., Ponti, G., Steenbrugge, K. C.
Publikováno v:
A&A 577, A38 (2015)
We describe the analysis of the seven broad-band X-ray continuum observations of the archetypal Seyfert 1 galaxy NGC 5548 that were obtained with XMM-Newton or Chandra, simultaneously with high-energy (> 10 keV) observations with NuSTAR and INTEGRAL.
Externí odkaz:
http://arxiv.org/abs/1501.03426
Autor:
Mehdipour, M., Kaastra, J. S., Kriss, G. A., Cappi, M., Petrucci, P. -O., Steenbrugge, K. C., Arav, N., Behar, E., Bianchi, S., Boissay, R., Branduardi-Raymont, G., Costantini, E., Ebrero, J., Di Gesu, L., Harrison, F. A., Kaspi, S., De Marco, B., Matt, G., Paltani, S., Peterson, B. M., Ponti, G., Nuñez, F. Pozo, De Rosa, A., Ursini, F., de Vries, C. P., Walton, D. J., Whewell, M.
An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to be in an exceptional state of persistent heavy absorption. Our observations taken in 2013-2014 with XMM-Newton, Swift, NuSTAR, INTEGRAL, Chandra, HST a
Externí odkaz:
http://arxiv.org/abs/1501.01188
Autor:
Arav, N., Chamberlain, C., Kriss, G. A., Kaastra, J. S., Cappi, M., Mehdipour, M., Petrucci, P. -O., Steenbrugge, K. C., Behar, E., Bianchi, S., Boissay, R., Branduardi-Raymont, G., Costantini, E., Ely, J. C., Ebrero, J., di Gesu, L., Harrison, F. A., Kaspi, S., Malzac, J., De Marco, B., Matt, G., Nandra, K. P., Paltani, S., Peterson, B. M., Pinto, C., Ponti, G., Nuñez, F. Pozo, De Rosa, A., Seta, H., Ursini, F., de Vries, C. P., Walton, D. J., Whewel, M.
(Abridged) Our deep multiwavelength campaign on NGC 5548 revealed an unusually strong X-ray obscuration. The resulting dramatic decrease in incident ionizing flux allowed us to construct a comprehensive physical, spatial and temporal picture for the
Externí odkaz:
http://arxiv.org/abs/1411.2157
Autor:
Kaastra, J. S., Ebrero, J., Arav, N., Behar, E., Bianchi, S., Branduardi-Raymont, G., Cappi, M., Costantini, E., Kriss, G. A., De Marco, B., Mehdipour, M., Paltani, S., Petrucci, P. -O., Pinto, C., Ponti, G., Steenbrugge, K. C., de Vries, C. P.
Publikováno v:
A&A 570, A73 (2014)
We present in this paper the results of a 270 ks Chandra HETGS observation in the context of a large multiwavelength campaign on the Seyfert galaxy Mrk 509. The HETGS spectrum allows us to study the high ionisation warm absorber and the Fe-K complex
Externí odkaz:
http://arxiv.org/abs/1409.2021