Seminario en Departamento de Astronomía
Susana Garay Romero 28 May 202128/05/21 a las 18:31 hrs.2021-05-28 18:31:28
Jueves 03 de Junio a las 10:00 hrs, tendremos seminario en el Departamento de Astronomía de la Universidad de Chile.
** Note: This seminar will be delivered at 10:00 AM! **
Speaker: Di Li
Chief Scientist, Radio Division, National Astronomical Observatories of China. FAST Operations Center
Title: The Commensal Radio Astronomy FAST Survey (CRAFTS) and its Science Implications
Abstract: Inspired by the visionary efforts of building Arecibo, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) was formally established as a stand-alone project in 2007. Through much trials and tribulation, FAST started normal operation in 2020 and has just finished its first internationally open call for proposal. I report here a few science highlights so far, particularly from the Commensal Radio Astronomy FAST Survey (CRAFTS: Li et al. 2018 IEEE MW). Enabled by a novel calibration technique, CRAFTS simultaneously records pulsar, Galactic HI, extra-galactic HI, and transient data streams, the first such commensal survey worldwide. CRAFTS has discovered more than 150 new pulsars, including at least one DNS system, 6 new FRBs including an active repeater that has been localized and with a colocated persistent radio source, discovered HI galaxies, started to produce high-quality HI images. Other dedicated programs have found first evidence for 3D alignment between pulsar spin and spatial velocity (Yao et al. 2021 Nature Astronomy), realized a new Zeeman tracer (Ching et al. under review for Nature), namely HI Narrow Self-Absorption (HINSA), constraining the cold gas content, particularly dark gas, through absorption (Tang et al. 2021 submitted), etc. Possibly the last giant single dish of its kind, FAST has the potential to further explore a unique parameter space of the cosmos and to keep producing significant discoveries in the coming decades.
Virtual room: uchile.zoom.us/ ... NkNpdGFZb0sxRVZJdz09
Rene A. Mendez
Seminar Coordinator
DAS/UChile - rmendez@uchile.cl
--
--
Saludos,
Alejandro Leal Obreque
Departamento de Astronomía
FCFM - UNIVERSIDAD DE CHILE
22 977 1154
aleal@das.uchile.clwww.das.uchile.cl
** Note: This seminar will be delivered at 10:00 AM! **
Speaker: Di Li
Chief Scientist, Radio Division, National Astronomical Observatories of China. FAST Operations Center
Title: The Commensal Radio Astronomy FAST Survey (CRAFTS) and its Science Implications
Abstract: Inspired by the visionary efforts of building Arecibo, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) was formally established as a stand-alone project in 2007. Through much trials and tribulation, FAST started normal operation in 2020 and has just finished its first internationally open call for proposal. I report here a few science highlights so far, particularly from the Commensal Radio Astronomy FAST Survey (CRAFTS: Li et al. 2018 IEEE MW). Enabled by a novel calibration technique, CRAFTS simultaneously records pulsar, Galactic HI, extra-galactic HI, and transient data streams, the first such commensal survey worldwide. CRAFTS has discovered more than 150 new pulsars, including at least one DNS system, 6 new FRBs including an active repeater that has been localized and with a colocated persistent radio source, discovered HI galaxies, started to produce high-quality HI images. Other dedicated programs have found first evidence for 3D alignment between pulsar spin and spatial velocity (Yao et al. 2021 Nature Astronomy), realized a new Zeeman tracer (Ching et al. under review for Nature), namely HI Narrow Self-Absorption (HINSA), constraining the cold gas content, particularly dark gas, through absorption (Tang et al. 2021 submitted), etc. Possibly the last giant single dish of its kind, FAST has the potential to further explore a unique parameter space of the cosmos and to keep producing significant discoveries in the coming decades.
Virtual room: uchile.zoom.us/ ... NkNpdGFZb0sxRVZJdz09
Rene A. Mendez
Seminar Coordinator
DAS/UChile - rmendez@uchile.cl
--
--
Saludos,
Alejandro Leal Obreque
Departamento de Astronomía
FCFM - UNIVERSIDAD DE CHILE
22 977 1154
aleal@das.uchile.clwww.das.uchile.cl
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