Theoretical astrophysics and plasma physics at RPC

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Supermassive black hole mass measurements for NGC 1300 and NGC 2748 based on HST emission-line gas kinematics

ArXiv astro-ph/0502573 (2005)

Authors:

JW Atkinson, JL Collett, A Marconi, DJ Axon, A Alonso-Herrero, D Batcheldor, JJ Binney, A Capetti, CM Carollo, L Dressel, H Ford, J Gerssen, MA Hughes, D Macchetto, W Maciejewski, MR Merrifield, C Scarlata, W Sparks, M Stiavelli, Z Tsvetanov, RP van der Marel

Abstract:

We present Space Telescope Imaging Spectrograph emission-line spectra of the central regions of the spiral galaxies NGC 1300 and NGC 2748. From the derived kinematics of the nuclear gas we have found evidence for central supermassive black holes in both galaxies. The estimated mass of the black hole in NGC 1300 is 6.6 (+6.3, -3.2) x 10^7 solar masses and in NGC 2748 is 4.4 (+3.5, -3.6) x 10^7 solar masses (both at the 95% confidence level). These two black hole mass estimates contribute to the poorly sampled low-mass end of the nuclear black hole mass spectrum.
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Quantum and semiclassical study of magnetic quantum dots

Physical Review B American Physical Society (APS) 71:7 (2005) 075331

Authors:

Bence Kocsis, Gergely Palla, József Cserti
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Commission 28: Galaxies

Proceedings of the International Astronomical Union 1:T26A (2005) 281-289

Authors:

EM Sadler, F Combes, JJ Binney, AP Fairall, TM Heckman, V Karachentseva, GR Knapp, RC Kraan-Korteweg, B Leibundgut, SJ Lilly, JV Narlikar, S Okamura

Abstract:

This report gives a brief overview of some of the activities and developments in extragalactic research over the past three years. © 2007 International Astronomical Union.
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Emission measures for the single giant beta Ceti

ESA SP PUBL 560 (2005) 931-934

Authors:

SN Sagesser, C Jordan

Abstract:

We present emission measures of the single giant beta Ceti derived from line fluxes obtained with the XMM-Newton instruments RGS1 and RGS2. Photospheric and coronal element abundances are discussed, as well as the FIP effect. The RGS fluxes of 1(st) and 2(nd) order were measured with CORA in order to pay attention to Poissonian statistics which apply at low count rates. The results for beta Ceti are compared to those obtained from line fluxes published for Capella.
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The cosmological context of extra-planar gas

Extra-Planar Gas 331 (2005) 131-138
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