Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Whewell, M."'
Publikováno v:
A&A 595, A85 (2016)
NGC 1365 is a Seyfert 2 galaxy with a starburst ring in its nuclear region. In this work we look at the XMM Reflection Grating Spectrometer (RGS) data from four 2012-13, three 2007 and two 2004 observations of NGC 1365. We characterise the narrow-lin
Externí odkaz:
http://arxiv.org/abs/1609.02944
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:
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:
Kaastra, J. S., Kriss, G. A., Cappi, M., Mehdipour, M., Petrucci, P. -O., Steenbrugge, K. C., Arav, N., Behar, E., Bianchi, S., Boissay, R., Branduardi-Raymont, G., Chamberlain, C., Costantini, E., Ely, J. C., Ebrero, J., Di Gesu, L., Harrison, F. A., Kaspi, S., Malzac, J., De Marco, B., Matt, G., Nandra, K., Paltani, S., Person, R., Peterson, B. M., Pinto, C., Ponti, G., Nuñez, F. Pozo, De Rosa, A., Seta, H., Ursini, F., de Vries, C. P., Walton, D. J., Whewell, M.
Supermassive black holes in the nuclei of active galaxies expel large amounts of matter through powerful winds of ionized gas. The archetypal active galaxy NGC 5548 has been studied for decades, and high-resolution X-ray and UV observations have prev
Externí odkaz:
http://arxiv.org/abs/1406.5007
Akademický článek
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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:
Astronomy & Astrophysics / Astronomie et Astrophysique; Sep2015, Vol. 581, p1-14, 14p