A new class of SETI beacons that contain information (22-aug-2010)
نویسندگان
چکیده
A NEW CLASS OF SETI BEACONS THAT CONTAIN INFORMATION G. R. Harp, R. F. Ackermann, Samantha K. Blair, J. Arbunich, P. R. Backus, J. C. Tarter, and the ATA Team SETI Institute 515 N. Whisman Road Mountain View, CA 94043 www.seti.org 1 Abstract. In the cm-wavelength range, an extraterrestrial electromagnetic narrow band (sine wave) beacon is an excellent choice to get alien attention across interstellar distances because 1) it is not strongly affected by interstellar / interplanetary dispersion or scattering, and 2) searching for narrowband signals is computationally efficient (scales as S N log( S N ) where S N = number of
منابع مشابه
A Novel One Sided Feature Selection Method for Imbalanced Text Classification
The imbalance data can be seen in various areas such as text classification, credit card fraud detection, risk management, web page classification, image classification, medical diagnosis/monitoring, and biological data analysis. The classification algorithms have more tendencies to the large class and might even deal with the minority class data as the outlier data. The text data is one of t...
متن کاملIs there “RFI” in pulsed optical SETI?
In the 40 year history of SETI, radio frequency interference (RFI) has proven to be the dominant background in microwave searches. As the SETI community broadens its electromagnetic scope and searches for optical beacons, it must characterize and identify backgrounds for pulsed optical SETI. We must ask the question: What is the “RFI” for pulsed optical SETI? This paper seeks to answer the ques...
متن کاملAn All-sky Optical Seti Survey
We present plans for an all-sky search for pulsed optical SETI beacons at Agassiz station in Harvard, Massachusetts. We will use a 1.8 meter f/2.5 spherical “light bucket” (2-3 arcmin resolution) focused onto a multi-pixel camera consisting of sixteen 64-pixel photomultiplier tubes (with pixels measuring 1.5 arcmin on a side) in two matched focal planes. It will observe a 1. ◦6× 0 . ◦2 patch of...
متن کاملعلوم/ مدیریت بازیابی و اشاعه اطلاعات
In this paper, the author presents the significance of denomination as well as the point that, name must contain the main functions of the scientific field and be of consensus. Name of a major indicates the unity of its subject, such that if the major’s components are alongside each other as integration rather than annexation, they exhibit a single identity. In its new definition, librarianship...
متن کاملInternet-based 'social sharing' as a new form of global production: The case of SETI@home
Benkler (‘Sharing Nicely’, Yale Law Journal, 2004, Vol. 114, pp. 273-358) has argued that ‘social sharing’ via Internet-based distributed computing is a new, so far under-appreciated modality of economic production. This paper presents results from an empirical study of SETI@home (the Search for Extraterrestrial Intelligence), which is the classic example of such a computing project. The aim is...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- CoRR
دوره abs/1211.6470 شماره
صفحات -
تاریخ انتشار 2012