157 citations · 1.1k across the 23 of their papers we have counts for
23 papers
High-resolution ammonia mapping of the very young protostellar core Chamaeleon-MMS1
M. S. Väisälä, J. Harju, M. J. Mantere +4
Cha-MMS1 was mapped in the NH_3(1,1) line and the 1.2 cm continuum using the Australia Telescope Compact Array, ATCA. The angular resolution of the ATCA observations is 7'' (~ 1000…
Azimuthal dynamo wave in spherical shell convection
Elizabeth Cole, Petri J. Käpylä, Maarit J. Mantere +1
We report the finding of an azimuthal dynamo wave of a low-order (m=1) mode in direct numerical simulations (DNS) of turbulent convection in spherical shells. Such waves are predic…
Multiperiodicity, modulations and flip-flops in variable star light curves II. Analysis of II Peg photometry during 1979-2010
Marjaana Lindborg, Maarit J. Mantere, Nigul Olspert +5
According to earlier Doppler images of the magnetically active primary giant component of the RS CVn binary II Peg, the surface of the star was dominated by one single active longi…
Magnetic field topology of the RS CVn star II Pegasi
O. Kochukhov, M. J. Mantere, T. Hackman +1
The dynamo processes in cool active stars generate complex magnetic fields responsible for prominent surface stellar activity and variability at different time scales. For a small…
Effects of enhanced stratification on equatorward dynamo wave propagation
Petri J. Käpylä, Maarit. J. Mantere, Elizabeth Cole +2
We present results from simulations of rotating magnetized turbulent convection in spherical wedge geometry representing parts of the latitudinal and longitudinal extents of a star…
Spoke-like differential rotation in a convective dynamo with a coronal envelope
Jörn Warnecke, Petri J. Käpylä, Maarit. J. Mantere +1
We report on the results of four convective dynamo simulations with an outer coronal layer. The magnetic field is self-consistently generated by the convective motions beneath the…