Showing 2014 · astro-ph.GAShow all

31 papers · 2 filters

astro-ph.GA2014★ 31 cited

Radio AGN in spiral galaxies

Sugata Kaviraj, Stanislav S. Shabala, Adam T. Deller +1

Radio AGN in the nearby Universe are more likely to be found in galaxies with early-type morphology, the detection rate in spiral or late-type galaxies (LTGs) being around an order…

astro-ph.GA2014★ 34 cited

On origin and destruction of relativistic dust and its implication for ultrahigh energy cosmic rays

Thiem Hoang, A. Lazarian, R. Schlickeiser

Dust grains may be accelerated to relativistic speeds by radiation pressure, diffusive shocks, and other acceleration mechanisms. Such relativistic grains have been suggested as pr…

astro-ph.GA2014★ 35 cited

Modeling Grain Alignment by Radiative Torques and Hydrogen Formation Torques in Reflection Nebula

Thiem Hoang, A Lazarian, B-G Andersson

Reflection nebulae--dense cores--illuminated by surrounding stars offer a unique opportunity to directly test our quantitative model of grain alignment based on radiative torques (…

astro-ph.GA2014★ 56 cited

Subarcsecond international LOFAR radio images of the M82 nucleus at 118 MHz and 154 MHz

E. Varenius, J. E. Conway, I. Martí-Vidal +25

The nuclear starburst in the nearby galaxy M82 provides an excellent laboratory for understanding the physics of star formation. This galaxy has been extensively observed in the pa…

astro-ph.GA2014★ 92 cited

Anatomy of the AGN in NGC 5548: II. The Spatial, Temporal and Physical Nature of the Outflow from HST/COS Observations

N. Arav, C. Chamberlain, G. A. Kriss +30

(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 con…

astro-ph.GA2014★ 44 cited

The triggering of local AGN and their role in regulating star formation

Sugata Kaviraj, Stanislav S. Shabala, Adam T. Deller +1

We explore the processes that trigger local AGN and the role of these AGN in regulating star formation, using ~350 nearby galaxies observed by the mJy Imaging VLBA Exploration at 2…