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Millimeter transient point sources in the sptpol 100 square degree survey

Whitehorn, N., Natoli, T., Ade, Peter, Austermann, J. E., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chiang, H. C., Cho, H-M., Citron, R., Crawford, T. M., Crites, A. T., Haan, T. de, Dobbs, M. A., Everett, W., Gallicchio, J., George, E. M., Gilbert, A., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holder, G. P., Holzapfel, W. L., Hoover, S., Hou, Z., Hrubes, J. D., Huang, N., Hubmayr, J., Irwin, K. D., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Li, D., McMahon, J. J., Meyer, S. S., Mocanu, L., Nibarger, J. P., Novosad, V., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Smecher, G., Stark, A. A., Story, K. T., Tucker, Carole, Vanderlinde, K., Vieira, J. D., Wang, G. and Yefremenko, V. 2016. Millimeter transient point sources in the sptpol 100 square degree survey. Astrophysical Journal 830 (2) , 143. 10.3847/0004-637X/830/2/143

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Abstract

The millimeter transient sky is largely unexplored, with measurements limited to follow-up of objects detected at other wavelengths. High-angular-resolution telescopes, designed for measurement of the cosmic microwave background (CMB), offer the possibility to discover new, unknown transient sources in this band—particularly the afterglows of unobserved gamma-ray bursts (GRBs). Here, we use the 10 m millimeter-wave South Pole Telescope, designed for the primary purpose of observing the CMB at arcminute and larger angular scales, to conduct a search for such objects. During the 2012–2013 season, the telescope was used to continuously observe a 100 deg2 patch of sky centered at R.A. 23h30m and decl. −55° using the polarization-sensitive SPTpol camera in two bands centered at 95 and 150 GHz. These 6000 hr of observations provided continuous monitoring for day- to month-scale millimeter-wave transient sources at the 10 mJy level. One candidate object was observed with properties broadly consistent with a GRB afterglow, but at a statistical significance too low (p = 0.01) to confirm detection.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Publisher: American Astronomical Society
ISSN: 1538-4357
Date of First Compliant Deposit: 7 July 2017
Date of Acceptance: 26 July 2016
Last Modified: 30 Aug 2017 11:39
URI: http://orca-mwe.cf.ac.uk/id/eprint/102172

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