104 citations · 263 across the 8 of their papers we have counts for
8 papers
The case for gravitational millilensing in the multiply--imaged quasar B1152+199
Saghar Asadi, Erik Zackrisson, Eskil Varenius +3
Previous Very Long Baseline Interferometry (VLBI) observations of the quasar B1152+199 at 5GHz has revealed two images of a strongly lensed jet with seemingly discordant morphologi…
Probing cold dark matter subhalos with simulated ALMA observations of macrolensed sub-mm galaxies
Saghar Asadi, Erik Zackrisson, Emily Freeland
If the dark matter halos of galaxies contain large numbers of subhalos as predicted by the CDM model, these subhalos are expected to appear in strong galaxy--galaxy lens systems…
Extragalactic SETI: The Tully-Fisher relation as a probe of Dysonian astroengineering in disk galaxies
E. Zackrisson, P. Calissendorff, S. Asadi +1
If advanced extraterrestrial civilizations choose to construct vast numbers of Dyson spheres to harvest radiation energy, this could affect the characteristics of their host galaxi…
Diversity in extinction laws of Type Ia supernovae measured between and
R. Amanullah, J. Johansson, A. Goobar +36
We present ultraviolet (UV) observations of six nearby Type~Ia supernovae (SNe~Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR)…
Primordial star clusters at extreme magnification
Erik Zackrisson, Juan Gonzalez, Simon Eriksson +4
Gravitationally lensed galaxies with magnification ~10-100 are routinely detected at high redshifts, but magnifications significantly higher than this are hampered by a combination…
A search for Population III galaxies in CLASH. I. Singly-imaged candidates at high redshift
Claes-Erik Rydberg, Erik Zackrisson, Adi Zitrin +6
Population III galaxies are predicted to exist at high redshifts and may be rendered sufficiently bright for detection with current telescopes when gravitationally lensed by a fore…
Future mmVLBI Research with ALMA: A European vision
R. P. J. Tilanus, T. P. Krichbaum, J. A. Zensus +165
Very long baseline interferometry at millimetre/submillimetre wavelengths (mmVLBI) offers the highest achievable spatial resolution at any wavelength in astronomy. The anticipated…
Hunting for dark halo substructure using submilliarcsecond-scale observations of macrolensed radio jets
Erik Zackrisson, Saghar Asadi, Kaj Wiik +8
Dark halo substructure may reveal itself through secondary, small-scale gravitational lensing effects on light sources that are macrolensed by a foreground galaxy. Here, we explore…