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Title: A 3π Search for Planet Nine at 3.4 μm with WISE and NEOWISE

Journal Article · · Astronomical Journal (New York, N.Y. Online)
 [1]; ;  [2]
  1. Berkeley Center for Cosmological Physics, Berkeley, CA 94720 (United States)
  2. Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, 84112 (United States)

The recent “Planet Nine” hypothesis has led to many observational and archival searches for this giant planet proposed to orbit the Sun at hundreds of astronomical units. While trans-Neptunian object searches are typically conducted in the optical, models suggest Planet Nine could be self-luminous and potentially bright enough at ∼3–5 μm to be detected by the Wide-field Infrared Survey Explorer (WISE). We have previously demonstrated a Planet Nine search methodology based on time-resolved WISE coadds, allowing us to detect moving objects much fainter than would be possible using single-frame extractions. In the present work, we extend our 3.4 μm (W1) search to cover more than three-quarters of the sky and incorporate four years of WISE observations spanning a seven-year time period. This represents the deepest and widest-area WISE search for Planet Nine to date. We characterize the spatial variation of our survey’s sensitivity and rule out the presence of Planet Nine in the parameter space searched at W1 < 16.7 in high Galactic latitude regions (90% completeness).

OSTI ID:
22897449
Journal Information:
Astronomical Journal (New York, N.Y. Online), Vol. 155, Issue 4; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
Country of Publication:
United States
Language:
English

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Generation of Highly Inclined Trans-Neptunian Objects by Planet Nine text January 2016
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Cited By (3)

A new approach to distant solar system object detection in large survey data sets journal July 2018
The Case for a Large-scale Occultation Network journal June 2019
The Case for a Large-Scale Occultation Network text January 2019

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