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- Istituto Nazionale di Fisica Nucleare, Sezione di MilanoIT369 papers
- Brera Astronomical ObservatoryIT367 papers
- National Institute for AstrophysicsIT354 papers
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13 papers · 2 filters
The 2010 very high energy gamma-ray flare & 10 years of multi-wavelength observations of M 87
The H. E. S. S. Collaboration, :, A. Abramowski +442
Abridged: The giant radio galaxy M 87 with its proximity, famous jet, and very massive black hole provides a unique opportunity to investigate the origin of very high energy (VHE;…
On the cosmological evolution of the black hole - host galaxy relation in quasars
L. Portinari, J. Kotilainen, R. Falomo +1
Quasars are useful tracers of the cosmological evolution of the black hole mass - galaxy relation. We compare the expectations of Semi-Analytical Models (SAM) of galaxy evolution,…
The low-mass end of the Mbh/Mhost relation in quasars
Roberto Decarli, Renato Falomo, Jari K. Kotilainen +3
The Mbh-Mhost relation in quasars has been probed only in a limited parameter space, namely at Mbh~10^9 Msun and Mhost~10^12 Msun. Here we present a study of 26 quasars lying in th…
Spherical `Top-Hat' Collapse in general Chaplygin gas dominated universes
R. A. A. Fernandes, J. P. M. de Carvalho, A. Yu. Kamenshchik +2
We expand previous works on the spherical `top-hat' collapse (SC-TH) framework in generalized Chaplygin gas (gCg) dominated universes. Here we allow the collapse in all energetic c…
The host galaxy of the BL Lacertae object 1ES 0647+250 and its imaging redshift
J. K. Kotilainen, T. Hyvönen, R. Falomo +2
Since no spectroscopic redshift is available for the remarkable BL Lac object 1ES 0647+250, we aim to derive an estimate of its distance from the properties of its host galaxy.We o…
GRB091127/SN2009nz and the VLT/X-shooter spectroscopy of its host galaxy: probing the faint end of the mass-metallicity relation
S. D. Vergani, H. Flores, S. Covino +36
We perform a detailed study of the gamma-ray burst GRB091127/SN2009nz host galaxy at z=0.490 using the VLT/X-shooter spectrograph in slit and integral-field unit (IFU). From the an…