Sustaining submillimeter science in the next decade and beyond
Notice bibliographique
Résumé
Vigorous and transformative investigation of the millimeter/submillimeter sky at high sensitivity and high resolution has benefitted from the recent completion five years of science from the Atacama Large Millimeter/submillimeter Array (ALMA). ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), NSC and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. ALMA, a versatile interferometric telescope at 5000m elevation in the Atacama Desert of northern Chile, is comprised of sixty-six precision telescopes which may be arrayed over a 16 km extent on the high Chajnantor plain. The ALMA system is dynamically upgraded-very long baseline capability is expected to bring microarcsecond imaging to a worldwide array anchored by ALMA with excellent potential for imaging nearby Black Holes on the scales of their Event Horizons. During the upcoming decade through 2030, new capabilities will expand ALMAs envelope of exploration even further. ALMA will complete its 35–950 GHz spectral grasp. The final receiver bands will be deployed Band 5 (164–211 GHz) is being commissioned now; receiver construction has begun for Band 1 (35–52 GHz) and a prototype has been constructed for Band 2 (67–95 GHz). Building on the successes of the initial suite of capabilities, ALMA will look to enhance its initial capabilities in several key areas in the 2030 decade. These include increased bandwidth (for increased sensitivity and spectral coverage), increased imaging speed (cameras / focal plane arrays), and higher angular resolution (longer baselines). The scientific thrust will include the ability for enhanced imaging of planetary disks, galaxy assembly, and chemical analyses of star-forming regions. An upgraded correlator is under study, which will enlarge the number of channels and increase resolution by 8×, while improving spectral sensitivity by employing more bits. When complemented with an upgraded digitization and frequency distribution system, also under study, the correlation capacity may be doubled to 8 GHz per polarization and sideband. Several ALMA receivers already present more bandwidth to the correlation than it can currently process; the Band 2 prototype, for example provides two 8 GHz sidebands in two polarizations. Other improvements are under way, (1) to the ALMA Archive: enabling gains in usability and impact for the observatory; (2) implementation of the longest baselines at the highest frequency, along with study of achieving longer baselines at lower frequency to match, and (3) increasing wide field imaging, to provide efficient wider area coverage. ALMA is developing a Roadmap for identifying the capabilities needed to address community science drivers for the coming decade, which will be discussed at the conference. The scale of the upgrades considered is that of a mid-scale project; ALMA plans to submit a white paper to the decadal review describing these proposed upgrades. NRAO expects to issue a new Call for Proposals for Development Projects on 10 October 2016. End of January 2017 is the proposal deadline.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,005 | 0,005 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,004 | 0,006 |
| Science ouverte | 0,001 | 0,005 |
| Intégrité de la recherche | 0,003 | 0,003 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,018 | 0,012 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».