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Low-frequency terrestrial tensor gravitational-wave detector
Paik, Ho Jung,Griggs, Cornelius E,Moody, M Vol,Venkateswara, Krishna,Lee, Hyung Mok,B Nielsen, Alex,Majorana, Ettore,Harms, Jan Institute of Physics 2016 Classical and quantum gravity Vol.33 No.7
<P>Terrestrial gravitational-wave (GW) detectors are mostly based on Michelson-type laser interferometers with arm lengths of a few km and signal bandwidths of tens of Hz to a few kHz. Many conceivable sources would emit GWs below 10 Hz. A low-frequency tensor GW detector can be constructed by combining six magnetically levitated superconducting test masses. Seismic noise and Newtonian gravity noise are serious obstacles in constructing terrestrial GW detectors at such low frequencies. By using the transverse nature of GWs, a full tensor detector, which can in principle distinguish GWs from near-field Newtonian gravity, can be constructed. Such a tensor detector is sensitive to GWs coming from any direction with any polarization; thus a single antenna is capable of resolving the source direction and polarization. We present a design concept of a tensor GW detector that could reach a strain sensitivity of 10<SUP>−19</SUP>–10<SUP>−20</SUP> Hz<SUP>−1/2</SUP> at 0.2–10 Hz, compute its intrinsic detector noise, and discuss procedures of mitigating the seismic and Newtonian noise.</P>
Genetic variants of inducible costimulator are associated with allergic asthma susceptibility
Andiappan, Anand Kumar,Narayanan, Sriram,Myers, Rachel A.,Lee, Bernett,Nieuwenhuis, Maartje A.,Nardin, Alessandra,Park, Choon-Sik,Shin, Hyoung Doo,Kim, Jeong-Hyun,Westra, Harm-Jan,Franke, Lude,Esko, T Elsevier 2015 The journal of allergy and clinical immunology Vol.135 No.2