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Related papers: Observing protoplanetary discs with the Square Kil…

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ALMA has revealed that the millimetre dust structures of protoplanetary discs are extremely diverse. It has been proposed that the strength of H$_2$O emission in the inner disc particularly depends on the influx of icy pebbles from the…

Dust growth is often indirectly inferred observationally in star-forming environments, theoretically predicted to produce mm-sized particles in circumstellar discs, and also presumably witnessed by the predecessors of the terrestrial…

Earth and Planetary Astrophysics · Physics 2025-03-19 Matthäus Schulik , Bertram Bitsch , Anders Johansen , Michiel Lambrechts

In this chapter, we highlight a number of science investigations that are enabled by the inclusion of Band~5 ($4.6-13.8$ GHz) for SKA1-MID science operations, while focusing on the astrophysics of star formation over cosmic time. For…

The Square Kilometre Array (SKA) will transform our understanding of the role of the cold, atomic gas in galaxy evolution. The interstellar medium (ISM) is the repository of stellar ejecta and the birthsite of new stars and, hence, a key…

We analyze a sample of 12 HST-selected edge-on protoplanetary disks for which the vertical extent of the emission layers can be constrained directly. We present ALMA high angular resolution continuum images (0.1arcsec) of these disks at two…

We hypothesise that dust rings in protoplanetary discs formed by an embedded planet should have properties that reflect the planet's mass. We use 2D hydrodynamical simulations of planet-disc interactions to investigate this, focusing on…

Earth and Planetary Astrophysics · Physics 2026-05-28 Amena Faruqi , Jessica Speedie , Ralph E. Pudritz , Farzana Meru

We present a detailed multi-wavelength characterization of the multi-ring disk of HD 169142. We report new ALMA observations at 3 mm and analyze them together with archival 0.89 and 1.3 mm data. Our observations resolve three out of the…

Understanding planet formation requires to discern how dust grows in protoplanetary disks. An important parameter to measure in disks is the maximum dust grain size present. This is usually estimated through measurements of the dust opacity…

The Square Kilometre Array (SKA) is a radio telescope designed to operate between 70MHz and 10GHz. Due to this large bandwidth, the SKA will be built out of different collectors, namely antennas and dishes to cover the frequency range…

Instrumentation and Methods for Astrophysics · Physics 2012-01-04 Adam Gauci , Kristian Zarb Adami , John Abela , Babak E. Cohanim

The Square Kilometre Array (SKA) will make ground breaking discoveries in pulsar science. In this chapter we outline the SKA surveys for new pulsars, as well as how we will perform the necessary follow-up timing observations. The SKA's wide…

As the earliest stage of planet formation, massive, optically thick, and gas rich protoplanetary disks provide key insights into the physics of star and planet formation. When viewed edge-on, high resolution images offer a unique…

Solar and Stellar Astrophysics · Physics 2021-05-05 S. Wolff , G. Duchêne , K. Stapelfeldt , F. Ménard , C. Flores , D. Padgett , C. Pinte , M. Villenave , G. van der Plas , M. Perrin

When completed the Square Kilometre Array (SKA) will feature an unprecedented rate of image generation. While previous generations of telescopes have relied on human expertise to extract scientifically interesting information from the…

Instrumentation and Methods for Astrophysics · Physics 2016-01-19 C. Hollitt , M. Johnston-Hollitt , S. Dehghan , M. Frean , T. Bulter-Yeoman

Context. Observations at sub-millimeter and mm wavelengths will in the near future be able to resolve the radial dependence of the mm spectral slope in circumstellar disks with a resolution of around a few AU at the distance of the closest…

Solar and Stellar Astrophysics · Physics 2010-07-20 T. Birnstiel , L. Ricci , F. Trotta , C. P. Dullemond , A. Natta , L. Testi , C. Dominik , T. Henning , C. W. Ormel , A. Zsom

Most of the pulsar science case with the Square Kilometre Array (SKA) depends on long-term precision pulsar timing of a large number of pulsars, as well as astrometric measurements of these using very long baseline interferometry (VLBI).…

High Energy Astrophysical Phenomena · Physics 2025-12-19 E. F. Keane , V. Graber , L. Levin , C. M. Tan , O. A. Johnson , C. Ng , C. Pardo-Araujo , M. Ronchi , D. Vohl , M. Xue , The SKA Pulsar Science Working Group

The settling of dust particles plays a critical role in the growth and dynamics of dust grains. We performed a detailed modeling of the ALMA continuum substructures for six highly inclined protoplanetary discs using radiative transfer…

Earth and Planetary Astrophysics · Physics 2026-05-11 Juanita Antilen , Paola Pinilla , Dafa Li , Marion Villenave , Anibal Sierra , Yao Liu , Myriam Benisty , Christian Ginski

Substructures such as rings, gaps, and cavities are commonly observed in protoplanetary discs and are thought to play a key role in dust evolution and planet formation. However, a fraction of the extended discs (68% dust radii > 30 AU) in…

Earth and Planetary Astrophysics · Physics 2026-04-10 Quincy Bosschaart , Osmar M. Guerra-Alvarado , Nienke van der Marel , Gijs D. Mulders

The Square Kilometre Array (SKA) will offer an unprecedented view onto the early Universe, using interferometric observations of the redshifted 21cm line. The 21cm line probes the thermal and ionization state of the cosmic gas, which is…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 Andrei Mesinger , Andrea Ferrara , Bradley Greig , Ilian Iliev , Garrelt Mellema , Jonathan Pritchard , Mario G. Santos

Terrestrial planets and the cores of giant planets are thought to be built by the collisional agglomeration of solids spanning over 20 orders of magnitude in size within a few million years. However, there is tension between this basic…

Earth and Planetary Astrophysics · Physics 2018-10-17 Sean M. Andrews , David J. Wilner , Enrique Macias , Carlos Carrasco-Gonzalez , Andrea Isella

Protoplanetary disks emit radiation across a broad range of wavelengths, requiring a multiwavelength approach to fully understand their physical mechanisms and how they form planets. Observations at sub-millimeter to centimeter wavelengths…

The Square Kilometre Array (SKA) is a proposed next generation radio telescope. Between now and 2005 this project is in a technology development and prototyping phase, with construction likely to begin in $\sim 2010$. This paper describes…

Astrophysics · Physics 2007-05-23 J. F. Bell