{"dp_type": "Project", "free_text": "SOLAR ENERGETIC PARTICLE FLUX"}
[{"awards": "2219065 Hood, John", "bounds_geometry": "POINT(0 -90)", "dataset_titles": null, "datasets": null, "date_created": "Mon, 19 Dec 2022 00:00:00 GMT", "description": "\\Millimeter-wave (mm-wave) observations of active galactic nucleus (AGN) variability have the potential to shed light on some of the key questions of AGN physics, such as the origin of blazar gamma-ray emission and the possible connection of AGN to the high-energy neutrinos detected by IceCube. While continuous, high-cadence monitoring of AGN is now common at gamma-ray, optical, and radio frequencies, AGN monitoring in the mm band has mostly been restricted to short campaigns on targeted sources. Cosmic Microwave Background (CMB) telescopes are now providing an option for daily monitoring of these objects within limited fields of view. I propose to use the South Pole Telescope (SPT), which was designed to observe the CMB at arcminute and larger angular scales, to monitor AGN, and then to expand this monitoring program to other CMB experiments such as Advanced ACTPol and the upcoming Simons Observatory and CMB-S4 experiments. A pilot project using data from the SPTpol camera on the SPT has enabled the monitoring of tens of mm-bright AGN on timescales from years to days at high signal to noise (S/N \u003e 10 in a 36-hour coadd). A study focused on the blazar PKS 2326-502, which has extensive, day-timescale monitoring data in gamma-ray, optical, and now mm-wave data between 2013 and 2016 shows intriguing evidence of correlated variability between SPTpol (150 GHz), SMARTS (O/IR) and Fermi (gamma-rays) observations. I propose to carry out such multi-wavelength correlation studies on a large statistical sample of mm-wave-bright AGN, enabled by the repurposing of existing and future CMB data. This large sample (covering nearly 70 % of the sky) will also be key to investigating hints of correlations between mm-bright blazar flares and high-energy neutrinos. I further propose to build a public-facing server that will provide the mm lightcurves I construct from CMB data to the wider community.", "east": 0.0, "geometry": "POINT(0 -90)", "instruments": null, "is_usap_dc": true, "keywords": "SOLAR ENERGETIC PARTICLE FLUX; South Pole Station", "locations": "South Pole Station", "north": -90.0, "nsf_funding_programs": "Post Doc/Travel", "paleo_time": null, "persons": "Hood, John", "platforms": null, "repositories": null, "science_programs": null, "south": -90.0, "title": "OPP-PRF: Millimeter-wave Blazar Monitoring With Cosmic Microwave Background Experiments: A New Tool for Probing Blazar Physics", "uid": "p0010399", "west": 0.0}]
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Project Title/Abstract/Map | NSF Award(s) | Date Created | PIs / Scientists | Dataset Links and Repositories | Abstract | Bounds Geometry | Geometry | Selected | Visible | |
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OPP-PRF: Millimeter-wave Blazar Monitoring With Cosmic Microwave Background Experiments: A New Tool for Probing Blazar Physics
|
2219065 |
2022-12-19 | Hood, John | No dataset link provided | \Millimeter-wave (mm-wave) observations of active galactic nucleus (AGN) variability have the potential to shed light on some of the key questions of AGN physics, such as the origin of blazar gamma-ray emission and the possible connection of AGN to the high-energy neutrinos detected by IceCube. While continuous, high-cadence monitoring of AGN is now common at gamma-ray, optical, and radio frequencies, AGN monitoring in the mm band has mostly been restricted to short campaigns on targeted sources. Cosmic Microwave Background (CMB) telescopes are now providing an option for daily monitoring of these objects within limited fields of view. I propose to use the South Pole Telescope (SPT), which was designed to observe the CMB at arcminute and larger angular scales, to monitor AGN, and then to expand this monitoring program to other CMB experiments such as Advanced ACTPol and the upcoming Simons Observatory and CMB-S4 experiments. A pilot project using data from the SPTpol camera on the SPT has enabled the monitoring of tens of mm-bright AGN on timescales from years to days at high signal to noise (S/N > 10 in a 36-hour coadd). A study focused on the blazar PKS 2326-502, which has extensive, day-timescale monitoring data in gamma-ray, optical, and now mm-wave data between 2013 and 2016 shows intriguing evidence of correlated variability between SPTpol (150 GHz), SMARTS (O/IR) and Fermi (gamma-rays) observations. I propose to carry out such multi-wavelength correlation studies on a large statistical sample of mm-wave-bright AGN, enabled by the repurposing of existing and future CMB data. This large sample (covering nearly 70 % of the sky) will also be key to investigating hints of correlations between mm-bright blazar flares and high-energy neutrinos. I further propose to build a public-facing server that will provide the mm lightcurves I construct from CMB data to the wider community. | POINT(0 -90) | POINT(0 -90) | false | false |