Conférences - Astronomie, astrophysique et cosmologie - États-Unis

Hosted by The NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA

The 2022 Sagan Summer Workshop will focus on the topic of exoplanet science in the Gaia era. The ESA Gaia mission has been mapping the Galaxy for over seven years, measuring very accurate positions and motions of over 1 billion stars. It has already greatly contributed to exoplanet science through the determination of more accurate stellar parameters, which in turn improve planet parameters, the detection of stellar companions, and the identification and characterization of young moving groups. In the near future, the unprecedented astrometric accuracy will result in the discovery of new exoplanets, as well as the characterization of known planets. The workshop will introduce the basics of astrometry, the impact of Gaia astrometry on astrophysics, and the astrometric detection and characterization of exoplanets. The synergy between the different planet detection techniques of astrometry, transits, radial velocities, and imaging will be discussed, as well as future advances in astrometry.

The Sagan Summer Workshops are aimed at advanced undergraduates, grad students, and postdocs, however all are welcome to attend. There is no registration fee for these workshops and the registration link will be available in February 2022.

The Triennial Earth-Sun Summit is a joint meeting of the AAS Solar Physics Division and the Space Physics and Aeronomy Section of the American Geophysical Union.

TESS welcomes participation by the entire Heliophysics community, including all four traditional sub-disciplines devoted to studies of the Sun, Heliosphere, Magnetosphere, and Ionosphere-Thermosphere-Mesosphere. TESS not only promotes greater interaction and unity within Heliophysics, but also connections to astrophysics and planetary physics.

GMTO Corp.

Registration is open for Black Holes at All Scales!

This meeting is the 8th annual Community Science Meeting hosted by the Giant Magellan Telescope project and will take place August 31–September 2, 2022 at the Hilton Sedona Resort at Bell Rock in Sedona, AZ.

The meeting is open to all with no registration fee. Partial travel reimbursement may be provided for graduate students and postdocs. The registration deadline is August 22, 2022, but there is a registration cap so don’t wait. Contributed talk abstracts are due by June 17.

This meeting has been designed to bring together a cross-disciplinary group on black hole research. Revolutionary strategies for studying Black Holes — from gravitational wave detection of merging black holes to imaging of event horizon scale regions. These discoveries have revolutionized the field while demonstrating how much remains to be learned about black hole demographics, formation and evolution, and interactions with their environment. This conference will focus on dynamics as a way to probe and learn about black holes across all mass scales, and topics will include the environment around Sgr A*, black hole mass measurements, demographics, rates for gravitational wave events, accretion disk dynamics around single and binary black holes, and tidal disruption events. Experts across this wide range of subfields will be brought together to canvass observational and theoretical progress, highlight key unanswered questions, and motivate future directions, particularly in the era of extremely large telescopes. The meeting program will encourage workshop-style discussion at a beautiful retreat in Sedona.

Local Organizing Committee;     Email.: bsitarski@gmto.org

black holes, gravitational waves, event horizon, extremely large telescopes, dynamics, accretion disks, multiplicity

The goal of this conference is to share a diverse range of scientific perspectives, both on the discoveries that VLASS can make in its own right, and on the advances that can come from the synergy of VLASS with other datasets. Opportunities for multiwavelength VLASS synergy include radio/mm observatories (e.g. ALMA) and surveys (e.g. EMU, Apertif), widefield imaging and spectroscopy (e.g. Roman, Euclid, DESI, PFS), multi-epoch surveys (e.g. ZTF, PanSTARRS, and LSST), and the high-energy domain (e.g. eROSITA).

This program is motivated by the recent observational insights concerning white dwarfs as individuals and as a population, based on the astrometry from Gaia and large photometric (Kepler, TESS, ZTF, VeraRubin) and spectroscopic (SDSS-V, DESI, WEAVE, 4MOST) surveys. Some of the questions that these data, combined with improved input physics and white dwarf models, will answer are: How does crystallization affect white dwarf cooling? How good is our understanding of convection, overshoot, and mixing in general? How good are the predictions of the low-frequency gravitational wave foreground and thermonuclear supernovae rates (SN Ia, Iax, Ca transients)? What is the nature of the recently discovered stellar remnants of thermonuclear supernova and/or their donors? What are the architectures of planetary systems that survive the metamorphosis of their host stars into white dwarfs, and what is their ultimate fate?

UC Santa Barbara, Kavli Institute for Theoretical Physics (KITP)

Astrometric, photometric and spectroscopic all-sky surveys provide the first complete, unbiased view of the Galactic population of the most abundant type of stellar remnants: white dwarfs. This wealth of observational data provides an array of opportunities to use white dwarfs as probes of a wide range of astrophysics, including the formation and evolution of stars and planets, the star formation rate of the Galaxy, and the populations of low-frequency gravitational wave sources and progenitors of thermonuclear supernovae. These applications require improved models of these electron-degenerate stars, which in turn rely on developments in the relevant input physics, including equations of state and opacities. This conference will provide a joint platform for experts in the observational and theoretical study of white dwarfs, scientists working on the underlying fundamental physics, and astronomers using white dwarfs as diagnostic tools to gain a panoramic overview of the state-of-the-art, to identify remaining limitations of the current models, and to explore novel scientific opportunities arising from the new data.

UC Santa Barbara, Kavli Institute for Theoretical Physics

The AdS/CFT Correspondence, an enduring cornerstone of theoretical physics, turns 25 in November 2022. An outstanding problem in AdS/CFT is to understand the origins of the correspondence in the most fundamental terms possible. Harnessing substantial progress over the last several years in nonperturbative quantum and conformal field theory, this program will develop a constructive approach to the emergence of bulk spacetime in AdS/CFT, rooted in the rigorous modern language of conformal field theory and the conformal bootstrap. By leveraging a new generation of techniques, the program aims to constrain gravitational observables and to sharpen our understanding of the principles governing the quantum gravity landscape. The program will extend the horizons of the conformal bootstrap itself, by applying existing techniques to new holographic observables and by drawing lessons from non-bootstrap approaches.

UC Santa Barbara, Kavli Institute for Theoretical Physics (KITP)

The last several years have seen rapid development of a new language for conformal field theory(CFT), including insights from the conformal bootstrap program. This conference will bring to bear the modern arsenal of conformal field theory on the foundations of holography and quantum gravity. A theme of the conference will be the extent to which consistency conditions on quantum gravity are inherited from those of CFT, and whether they naturally lead to string/M-theory. By bringing together scientists on both sides of holographic duality, we hope to explore these issues in a broad way.Topics to be covered include large N bootstrap and the structure of holographic CFTs dual to general relativity; CFT sum rules and gravitational effective field theory; aspects of supersymmetry in holography; low-dimensional holography, modularity and quantum chaos; black holes from strongly-coupled finite temperature physics; symmetry constraints on gravitational path integrals and AdS vacua; S-matrices, their relation to CFT correlators, and holography away from AdS.

Physique mathématique,    Algèbre

UC Santa Barbara, Kavli Institute for Theoretical Physics (KITP)

The cosmic web of the matter distribution in the universe provides the framework for the formation and evolution of galaxies and is fundamental to connect galactic properties to cosmology. This conference will address the effects of the cosmic web upon galaxies and vice versa. The aim is to create both a broad-brush and then, for some aspects, a more detailed, early to late time joint history of the web and galaxies. Indeed, the web reflects what the universe is on intermediate scales, which are informative, both in terms of cosmic evolution and quantity of data. It acts as a dynamically relevant intermediate-density bridge (easier to model) between cosmology and galaxies. It is also the source of all anisotropy, critical for angular momentum acquisition, which is the number two parameter in galaxy formation.

UC Santa Barbara, Kavli Institute for Theoretical Physics (KITP)

This conference aims to explore the application of data-driven tools to learn about galaxy formation physics. It endeavors to maximize the gain from astrostatistics, data science, and machine learning for the galaxy formation field as a whole, by emphasizing the translation of data-driven results to physical understanding. This conference will focus on a sharing of expertise in data exploration and analysis tools, and an open discussion of how these may teach us about the physics of galaxy formation and evolution.

One of the central features of the AAS Summer and Winter Meetings is their plenary talks spanning the full breadth of astrophysics. Some plenaries are given by prize winners from the AAS and other organizations, while other speakers are selected by the AAS Vice Presidents. Most plenary talks present science content, but talks on the state of the profession, demographics, and societal issues of relevance to the astronomical community are also regularly scheduled.

TESS welcomes participation by the entire Heliophysics community, including all four traditional sub-disciplines devoted to studies of the Sun, Heliosphere, Magnetosphere, and Ionosphere-Thermosphere-Mesosphere.

The Triennial Earth-Sun Summit is a joint meeting of the AAS Solar Physics Division and the Space Physics and Aeronomy Section of the American Geophysical Union.

One of the central features of the AAS Summer and Winter Meetings is their plenary talks spanning the full breadth of astrophysics. Some plenaries are given by prize winners from the AAS and other organizations, while other speakers are selected by the AAS Vice Presidents. Most plenary talks present science content, but talks on the state of the profession, demographics, and societal issues of relevance to the astronomical community are also regularly scheduled.