Proposal Science Categories
Proposals for the use of North American NRAO facilities - the GBT, VLA, and VLBA - are organized according to one of the following scientific categories:
SSP - Solar system, stars, planetary systems: Sun, planets, comets, IPM; exoplanets; main sequence stars; active stars; stellar winds; AGB & post-AGB stars; PNe; novae
GWT - Gravitational waves and energetic transients: supernovae, gravitational wave sources, gamma-ray bursts, tidal disruption events, fast radio bursts (including persistent radio sources), exotic/unknown transients
PCO - Pulsars and compact objects: millisecond pulsars, cataclysmic variables, black hole and/or neutron star x-ray binaries (including ULX), pulsar timing, pulsar proper motion
SFM - Star formation: young stellar objects; protostars; jets, outflows; T Tauri stars; circumstellar disks; protoplanetary systems; astrochemistry
ISM - Interstellar medium: galactic HI & OH; ISM magnetic field; SNRs; HII regions; astrochemistry
NGA - Normal galaxies, clusters, and groups: Galaxies (continuum), including galaxies in groups & clusters: disk emission; star formation; magnetic fields; galactic winds; starbursts; intracluster emission & ICM astrophysics
EGS - Extragalactic structure: Galaxies (line): galaxy structure; galaxy kinematics and dynamics; galaxy chemistry; gas in galaxies
HLA - High-Luminosity AGN: AGN, high-luminosity: FR II radio galaxies, quasars (including radio quiet quasars), blazars, BL Lacs
LLA - Low-Luminosity AGN: AGN, low-luminosity: FR I radio galaxies, FR 0 radio galaxies, Seyfert galaxies, quiescent SMBH, Sgr A*
HIZ - High redshift and source surveys: High-z objects; extragalactic source surveys; galaxy formation; gravitational lenses; large-scale structure & clusters (as cosmological probes); CMB; early universe
Change to take effect from 1 July 2022
The AGN science category will be split into two in order to manage the increasing number of proposals received in this science area. The new categories will be
HLA - High-Luminosity AGN: AGN, high-luminosity: FR II radio galaxies, quasars, QSOs, blazars, BL Lacs
LLA - Low-Luminosity AGN: AGN, low-luminosity: FR I radio galaxies, FR 0 radio galaxies, Seyfert galaxies quiescent SMBH, Sgr A*
All proposals submitted on or after 1 July 2022 will need to specify one of the following ten science categories: SSP, GWT, PCO, SFM, ISM, NGA, EGS, HLA, LLA, or HIZ.
Change to take effect from 4 January 2019
The ETP science category will be split into two in order to manage the increasing number of proposals received in this science area. The new categories will be
GWT – Gravitational Waves and Energetic Transients: supernovae, gravitational wave sources, gamma-ray bursts, tidal disruption events, fast radio bursts, exotic/unknown transients
PCO – Pulsars and Compact Objects: millisecond pulsars, cataclysmic variables, black hole and/or neutron star x-ray binaries, pulsar timing, pulsar proper motion
All proposals submitted on or after 4 January 2019 will need to specify one of the following nine science categories: SSP, GWT, PCO, SFM, ISM, NGA, EGS, AGN or HIZ.