Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Sobolewska, Malgosia A."'
Autor:
Król, Dominika Ł., Sobolewska, Małgosia, Stawarz, Łukasz, Siemiginowska, Aneta, Migliori, Giulia, Principe, Giacomo, Gurwell, Mark A.
X-ray continuum emission of active galactic nuclei (AGNs) may be reflected by circumnuclear dusty tori, producing prominent fluorescence iron lines at X-ray frequencies. Here we discuss the broad-band emission of three radio-loud AGN belonging to the
Externí odkaz:
http://arxiv.org/abs/2312.13418
Autor:
Pinto, Ciro, Steiner, James F., Bodaghee, Arash, Chakraborty, Priyanka, Sobolewska, Malgosia, Pasham, Dheeraj R., Ogorzalek, Anna, Zuhone, John, Bogdan, Akos, Vogelsberger, Mark
Publikováno v:
Astron. Nachr., 2024, e20240027
We investigate outflows and the physics of super-Eddington versus sub-Eddington regimes in black hole systems. Our focus is on prospective science using next-generation high-resolution soft X-ray instruments. We highlight the properties of black hole
Externí odkaz:
http://arxiv.org/abs/2310.15997
Autor:
Bariuan, Luis Gabriel C., Snios, Bradford, Sobolewska, Małgosia, Siemiginowska, Aneta, Schwartz, Daniel A.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 4, July 2022, Pages 4673 to 4681
We examine the fundamental plane of black hole activity for correlations with redshift and radio loudness in both radio-loud and radio-quiet quasar populations. Sources are compiled from archival data of both radio-loud and radio-quiet quasars over r
Externí odkaz:
http://arxiv.org/abs/2201.04666
Autor:
Sobolewska, Małgosia, Migliori, Giulia, Ostorero, Luisa, Siemiginowska, Aneta, Stawarz, Łukasz, Guainazzi, Matteo, Hardcastle, Martin
We present a model for the broadband radio-to-$\gamma$-ray spectral energy distribution of the compact radio source, PKS 1718-649. Because of its young age (100 years) and proximity ($z=0.014$), PKS 1718-649 offers a unique opportunity to study nucle
Externí odkaz:
http://arxiv.org/abs/2111.02611
Autor:
Snios, Bradford, Schwartz, Daniel A., Siemiginowska, Aneta, Sobolewska, Małgosia, Birkinshaw, Mark, Cheung, C. C., Gobeille, Doug B., Marshall, Herman L., Migliori, Giulia, Wardle, John F. C., Worrall, Diana M.
We present Chandra X-ray observations of 14 radio-loud quasars at redshifts $3 < z < 4$, selected from a well-defined sample. All quasars are detected in the 0.5-7.0 keV energy band, and resolved X-ray features are detected in five of the objects at
Externí odkaz:
http://arxiv.org/abs/2102.12609
Autor:
Snios, Bradford, Siemiginowska, Aneta, Sobolewska, Małgosia, Cheung, C. C., Kashyap, Vinay, Migliori, Giulia, Schwartz, Daniel A., Stawarz, Łukasz, Worrall, Diana M.
We present a comprehensive analysis of Chandra X-ray observations of 15 young radio quasars at redshifts $4.5 < z < 5.0$. All sources are detected in the $0.5-7.0$ keV energy band. Emission spectra are extracted, and the average photon index for the
Externí odkaz:
http://arxiv.org/abs/2007.01342
Autor:
Ruan, John J., Anderson, Scott F., Eracleous, Michael, Green, Paul J., Haggard, Daryl, MacLeod, Chelsea L., Runnoe, Jessie C., Sobolewska, Malgosia A.
Physical models of X-ray binary outbursts can aid in understanding the origin of 'changing-look' active galactic nuclei (AGN), if we can establish that these two black hole accretion phenomena are analogous. Previously, studies of the correlation bet
Externí odkaz:
http://arxiv.org/abs/1909.04676
Characteristic variability timescales in blazar gamma-ray light curves can provide insight into the physical processes responsible for the gamma-ray variability. The power spectral density (PSD) is capable of revealing such timescales, which may appe
Externí odkaz:
http://arxiv.org/abs/1909.04227
Autor:
Sobolewska, Malgosia, Siemiginowska, Aneta, Guainazzi, Matteo, Hardcastle, Martin, Migliori, Giulia, Ostorero, Luisa, Stawarz, Lukasz
Compact Symmetric Objects (CSOs) have been observed with Chandra and XMM-Newton to gain insights into the initial stages of a radio source evolution and probe the black hole activity at the time of relativistic outflow formation. However, there have
Externí odkaz:
http://arxiv.org/abs/1909.02084
Autor:
Ruan, John J., Anderson, Scott F., Eracleous, Michael, Green, Paul J., Haggard, Daryl, MacLeod, Chelsea L., Runnoe, Jessie C., Sobolewska, Malgosia A.
Despite their factor of ~10^8 difference in black hole mass, several lines of evidence suggest possible similarities between black hole accretion flows in active galactic nuclei (AGN) and Galactic X-ray binaries. However, it is still unclear whether
Externí odkaz:
http://arxiv.org/abs/1903.02553