MILLIMETER TRANSIENT POINT SOURCES IN THE SPTpol 100 SQUARE DEGREE SURVEY
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 transien...
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Published in | The Astrophysical journal Vol. 830; no. 2; pp. 143 - 151 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Philadelphia
The American Astronomical Society
20.10.2016
IOP Publishing Institute of Physics (IOP) |
Subjects | |
Online Access | Get full text |
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Summary: | 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. |
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Bibliography: | High-Energy Phenomena and Fundamental Physics AAS00558 AC02-07CH11359; AC02-76SF00515; SC0015640 USDOE Office of Science (SC), High Energy Physics (HEP) FERMILAB-PUB-16-119-AE-E; arXiv:1604.03507 |
ISSN: | 0004-637X 1538-4357 1538-4357 |
DOI: | 10.3847/0004-637X/830/2/143 |