In this chapter, we review some features of particle acceleration in astrophysical jets. We
begin by describing four observational results relating to the topic, with particular emphasis …

Jets are ubiquitous in the Universe and are seen from a large number of astrophysical
objects including active galactic nuclei, gamma ray bursters, micro-quasars, proto-planetary …

Context. Massive stars form in magnetized and turbulent environments and are often located
in stellar clusters. The accretion and outflows mechanisms associated with forming massive …

The role of outflows in the formation of stars and the protostellar disks that generate them is
a central question in astrophysics. Outflows are associated with star formation across the …

While it is widely accepted that planets are formed in protoplanetary disks, there is still much
debate on when this process happens. In a few cases protoplanets have been directly …

The formation of astrophysical objects of different nature, from black holes to gaseous giant
planets, involves a disk–jet system, where the disk drives the mass accretion onto a central …

We have investigated the protostellar disk around a Class 0/I protostar, L1527 IRS, using
multiwavelength observations of the dust continuum emission at λ= 0.87, 2.1, 3.3, and 6.8 …

Abstract We present Very Large Array (VLA) and Atacama Large Millimeter/submillimeter
Array (ALMA) observations of the close (0 farcs 3= 90 au separation) protobinary system …

Context. Recent studies have shown that 6.7 GHz methanol maser flares can be a powerful
tool for verifying the mechanisms of maser production and even the specific signatures of …

The majority of stars are part of gravitationally bound stellar systems, such as binaries.
Observations of protobinary systems constrain the conditions that lead to stellar multiplicity …