English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the various science cases for building Band 1 receivers as part ofALMA's ongoing Development Program. We describe the new frequency range forBand 1 of 35-52 GHz, a range chosen to maximize the receiver suite's scientificimpact. We first describe two key science drivers: 1) the evolution of grainsin protoplanetary disks and debris disks, and 2) molecular gas in galaxiesduring the era of re-ionization. Studies of these topics with Band 1 receiverswill significantly expand ALMA's Level 1 Science Goals. In addition, wedescribe a host of other exciting continuum and line science cases that requireALMA's high sensitivity and angular resolution. For example, ALMA Band 1continuum data will probe the Sunyaev-Zel'dovich Effect in galaxy clusters,Very Small Grains and spinning dust, ionized jets from young stars, spatial andflaring studies of Sgr A*, the acceleration sites of solar flares, pulsar windnebulae, radio supernovae, and X-ray binaries. Furthermore, ALMA Band 1 linedata will probe chemical differentiation in cloud cores, complex carbon chainmolecules, extragalactic radio recombination lines, masers, magnetic fieldsthrough Zeeman effect measurements, molecular outflows from young stars, theco-evolution of star formation and active galactic nuclei, and the molecularcontent of galaxies at z ~ 3. ALMA provides similar to better sensitivitiesthan the JVLA over 35-50 GHz, with differences increasing with frequency.ALMA's smaller antennas and shorter baselines, greater number of baselines, andsingle-dish capabilities, however, give it a significant edge for observingextended emission, making wide-field maps (mosaics), or attaining high imagefidelity, as required by the described science cases.

The Science Cases for Building a Band 1 Receiver Suite for ALMA