Search Publications
Jets from MRC 0600-399 bent by magnetic fields in the cluster Abell 3376
Nakanishi, Hiroyuki; Akamatsu, Hiroki; Takeuchi, Tsutomu T. +7 more
Galaxy clusters are known to harbour magnetic fields, the nature of which remains unresolved. Intra-cluster magnetic fields can be observed at the density contact discontinuity formed by cool and dense plasma running into hot ambient plasma1,2, and the discontinuity exists3 near the second-brightest galaxy4, MRC 06…
Measuring the density structure of an accretion hot spot
Reynolds, M.; Romanova, M. M.; Calvet, N. +5 more
Magnetospheric accretion models predict that matter from protoplanetary disks accretes onto stars via funnel flows, which follow stellar magnetic field lines and shock on the stellar surfaces1-3, leaving hot spots with density gradients4-6. Previous work has provided observational evidence of varying density in hot spots…
The importance of lake breach floods for valley incision on early Mars
Goudge, Timothy A.; Fassett, Caleb I.; Morgan, Alexander M. +1 more
The surface environment of early Mars had an active hydrologic cycle, including flowing liquid water that carved river valleys1-3 and filled lake basins4-6. Over 200 of these lake basins filled with sufficient water to breach the confining topography4,6, causing catastrophic flooding and incision of outlet canyons<…
Iron and nickel atoms in cometary atmospheres even far from the Sun
Jehin, E.; Manfroid, J.; Hutsemékers, D.
In comets, iron and nickel are found in refractory dust particles or in metallic and sulfide grains1. So far, no iron- or nickel-bearing molecules have been observed in the gaseous coma of comets2. Iron and a few other heavy atoms, such as copper and cobalt, have been observed only in two exceptional objects: the Great Comet …
Past, present and future stars that can see Earth as a transiting exoplanet
Kaltenegger, L.; Faherty, J. K.
In the search for life in the cosmos, transiting exoplanets are currently our best targets. With thousands already detected, our search is entering a new era of discovery with upcoming large telescopes that will look for signs of `life' in the atmospheres of transiting worlds. Previous work has explored the zone from which Earth would be visible w…