Science Archives Publication System

The evolution of Saturn's radiation belts modulated by changes in radial diffusion

DOI: 10.1038/s41550-017-0287-x Bibcode: 2017NatAs...1..872K

Krupp, N.; Roussos, E.; Paranicas, C. +2 more

Globally magnetized planets, such as the Earth¹ and Saturn², are surrounded by radiation belts of protons and electrons with kinetic energies well into the million electronvolt range. The Earth's proton belt is supplied locally from galactic cosmic rays interacting with the atmosphere³, as well as from slow inward …

2017 • Nature Astronomy

Cassini 21

The Galaxy's veil of excited hydrogen

DOI: 10.1038/s41550-017-0103 Bibcode: 2017NatAs...1E.103Z

Zaritsky, Dennis; Zhang, Huanian

Many of the baryons in our Galaxy probably lie outside the well-known disk and bulge components. Despite a wealth of evidence for the presence of some gas in galactic halos—including absorption line systems in the spectra of quasars, high-velocity neutral hydrogen clouds in our Galaxy halo, line-emitting ionized hydrogen originating from galactic …

2017 • Nature Astronomy

eHST 5

Gamma-ray observatory INTEGRAL reloaded

DOI: 10.1038/s41550-017-0083 Bibcode: 2017NatAs...1E..83V

van den Heuvel, Edward P. J.

The scientific aims of the European Space Agency's International Gamma-Ray Astrophysics Laboratory are considerably extended because of its unique capability to identify electromagnetic counterparts to sources of gravitational waves and ultra-high-energy neutrinos.

2017 • Nature Astronomy

INTEGRAL 4

Titan: Bubbles in focus

DOI: 10.1038/s41550-017-0122 Bibcode: 2017NatAs...1E.122H

Hanley, Jennifer

The seabed of Ligeia Mare, a hydrocarbon sea at the north pole of Titan, may be a favourable place for the separation of nitrogen and the creation of bubbles that then buoyantly rise to the sea's surface.

2017 • Nature Astronomy

Cassini 3

Huygens and Titan's methane cycle

DOI: 10.1038/s41550-017-0250-x Bibcode: 2017NatAs...1..585M

Maltagliati, Luca

2017 • Nature Astronomy

Huygens 0

Comets: Exposing the icy interior of 67P

DOI: 10.1038/s41550-017-0126 Bibcode: 2017NatAs...1E.126D

Delbo, Marco

Images from ESA's Rosetta mission show, in real time, the processes that sculpt the surface of a comet, which is revealed to have a pristine icy interior surrounded by an evolved surface.

2017 • Nature Astronomy

Rosetta 0

Enceladus: Deep implications for H₂

DOI: 10.1038/s41550-017-0136 Bibcode: 2017NatAs...1E.136W

Woods, Paul

2017 • Nature Astronomy

Cassini 0

The superluminous transient ASASSN-15lh as a tidal disruption event from a Kerr black hole

DOI: 10.1038/s41550-016-0002 Bibcode: 2016NatAs...1E...2L

Sollerman, J.; Gal-Yam, A.; Kim, S. +47 more

When a star passes within the tidal radius of a supermassive black hole, it will be torn apart¹. For a star with the mass of the Sun (M _⊙) and a non-spinning black hole with a mass <10⁸ M _⊙, the tidal radius lies outside the black hole event horizon² and the disruption results in a luminous…

2016 • Nature Astronomy

XMM-Newton 195