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Emission geometry, radiation pattern, and magnetic topology of the magnetar XTE J1810-197 in its quiescent state
pulsars: general – stars: neutron – X-rays: individual: XTE J1810− 197
2011/10/17
The return to the quiescent state of the Anomalous X-ray pulsar XTE J1810-197 following its 2003 outburst represents a unique opportunity to probe the surface emission properties of a magnetar. The qu...
Periodic Radio Emission from the M7 Dwarf 2MASS J13142039+1320011: Implications for the Magnetic Field Topology
Periodic Radio Emission Implications Magnetic Field Topology
2011/9/29
We present multi-epoch radio and optical observations of the M7 dwarf 2MASS J13142039+1320011. We detect a ~1 mJy source at 1.43, 4.86, 8.46 and 22.5 GHz, making it the most luminous radio emission ov...
Magnetic Topology of Coronal Hole Linkages
magnetic topology—Sun corona—Sun solar wind—Sun NASA/GSFC
2010/11/9
In recent work, Antiochos and coworkers argued that the boundary between the open and closed field regions on the Sun can be extremely complex with narrow corridors of open flux connecting seemingly d...
Homologous Flares and Magnetic Field Topology in Active Region NOAA 10501 on 20 November 2003
Active Regions Magnetic Fields Flares Dynamics Flares Relation
2010/11/11
We present and interpret observations of two morphologically homologous flares that occurred in active region (AR) NOAA 10501 on 20 November 2003. Both flares displayed four homologous H ribbons and ...
Topology of large scale structure as test of modified gravity
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
The genus of the iso-density contours is a robust measure of the topology of large-scale structure, and relatively insensitive to galaxies biasing and redshift-space distortions. We show that the grow...
We present results on the magnetic field topology in a pulsed radiative jet.For initially helical magnetic fields and perio dic velo city variations, we find thatthe magnetic field alternates along th...
A Note on Cosmological Parameters and the Topology of the Universe
Cosmological Parameters the Topology of the Universe
2010/10/15
Given the wealth of increasingly accurate cosmological observations, especially the recent results from the WMAP, and the development of methods and strategies in the search for cosmic topology, it is...