792 citations · 2.2k across the 38 of their papers we have counts for
8 papers · 2 filters
The magnetic field structure in NGC 253 in presence of a galactic wind
V. Heesen, M. Krause, R. Beck +1
We present radio continuum polarimetry observations of the nearby edge-on galaxy NGC 253 which possesses a very bright radio halo. Using the vertical synchrotron emission profiles…
Exploring the powering source of the TeV X-ray binary LS 5039
J. Moldon, M. Ribo, Josep M. Paredes +2
LS 5039 is one of the four TeV emitting X-ray binaries detected up to now. The powering source of its multi-wavelength emission can be accretion in a microquasar scenario or wind i…
An enigmatic HI cloud
L. Dedes, C. Dedes, P. W. M Kalberla
The discovery of an HI cloud with peculiar properties at equatorial coordinates (J2000) ra=07h49m, dec=04d30m is presented. The HI object was detected at 21cm using the 300-m NAIC…
Starbursts and torus evolution in AGN
B. Vollmer, T. Beckert, R. Davies
Recent VLT SINFONI observations of the close environments (~30pc) of nearby AGNs have shown that thick gas tori and starbursts with ages between 10 and 150Myr are frequently found.…
Stellar populations in a standard ISOGAL field in the Galactic disk
S. Ganesh, A. Omont, U. C. Joshi +4
We aim to identify the stellar populations (mostly red giants and young stars) detected in the ISOGAL survey at 7 and 15micron towards a field (LN45) in the direction l=-45, b=0.0.…
Quasi-simultaneous multi-frequency observations of inverted-spectrum GPS candidate sources
B. Vollmer, T. P. Krichbaum, E. Angelakis +1
Gigahertz-Peaked Spectrum (GPS) sources are probably the precursors of local radio galaxies.Existing GPS source samples are small (<200). It is necessary to extend the availabe sam…
Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501
B. Vollmer, M. Soida, A. Chung +5
VIVA HI observations of the Virgo spiral galaxy NGC 4501 are presented. The HI disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-den…
Cosmic rays and the magnetic field of the nearby starburst galaxy NGC 253
V. Heesen, R. -J. Dettmar, M. Krause +1
Using radio polarimetry we study the connection between the transport of cosmic rays (CR's), the three-dimensional magnetic field structure, and features of other ISM phases in the…