Physical Sciences and Mathematics Commons^™

Teaching Big History, Richard B. Simon, Mojgan Behmand, Thomas Burke, Esther Quaedackers, Seohyung Kim, Kiowa Bower, Neal Wolfe, James B. Cunningham, Cynthia Taylor, Martin Anderson, J. Daniel May, Philip Novak, Debbie Daunt, Jaime Castner, Ethan Annis, Amy E. Gilbert, Anne Reid, Suzanne Roybal, Alan Schut, Cynthia Brown, Harlan Stelmach

Harlan Stelmach

Teaching Threshold 6: The Rise Of Homo Sapiens, Richard Simon, Mojgan Behmand, Thomas Burke, Esther Quaedackers, Seohyung Kim, Kiowa Bower, Neal Wolfe, James Cunningham, Cynthia Taylor, Martin Anderson, J. May, Philip Novak, Debbie Daunt, Jaime Castner, Ethan Annis, Amy Gilbert, Anne Reid, Suzanne Roybal, Alan Schut, Cynthia Brown, Harlan Stelmach

Cynthia Taylor

Teaching Big History, Richard B. Simon, Mojgan Behmand, Thomas Burke, Esther Quaedackers, Seohyung Kim, Kiowa Bower, Neal Wolfe, James B. Cunningham, Cynthia Taylor, Martin Anderson, J. Daniel May, Philip Novak, Debbie Daunt, Jaime Castner, Ethan Annis, Amy E. Gilbert, Anne Reid, Suzanne Roybal, Alan Schut, Cynthia Brown, Harlan Stelmach

Mojgan Behmand

Teaching Big History Or Teaching About Big History? Big History And Religion, Harlan Stelmach

Harlan Stelmach

The Lyman Alpha Reference Sample: Iii. Properties Of The Neutral Ism From Gbt And Vla Observations, Stephen Pardy, John Cannon, Göran Östlin, Matthew Hayes, Thøger Rivera-Thorsen, Andreas Sandberg, Angela Adamo, Emily Freeland, E. Herenz, Lucia Guaita, Daniel Kunth, Peter Laursen, J. Mas-Hesse, Jens Melinder, Ivana Orlitova, Hecto Otí-Floranes, Johannes Puschnig, Daniel Schaerer, Anne Verhamme

John Cannon

No abstract provided.

Comparative Analysis Of A Transition Region Bright Point With A Blinker And Coronal Bright Point Using Multiple Eis Emission Lines, N Orange, H Oluseyi, D Chesny, M Patel, K Hesterly, L Preuss, C Neira, Niescja Turner

Niescja E. Turner

Since their discovery 20 year ago, transition region bright points have never been observed spectroscopically. Bright point properties have not been compared with similar transition region and coronal structures. In this work we have investigated three transient quiet Sun brightenings including a transition region bright point (TR BP), a coronal bright point (CBP) and a blinker. We use time-series observations of the extreme-ultraviolet emission lines of a wide range of temperature T(logT=5.3 – 6.4) from the EUV Imaging Spectrometer (EIS) onboard the Hinode satellite. We present the EIS temperature maps and Doppler maps, which are compared with magnetograms from theMichelson …

Intensities, Broadening And Narrowing Parameters In The Ν3 Band Of Methane, Et-Touhami Es-Sebbar, Aamir Farooq

Dr. Et-touhami Es-sebbar

The P-branch of methane׳s ν3 band is probed to carry out an extensive study of the 2905–2908 cm−1 infrared spectral region. Absolute line intensities as well as N2-, O2-, H2-, He-, Ar- and CO2-broadening coefficients are determined for nine transitions at room temperature. Narrowing parameters due to the Dicke effect have also been investigated. A narrow emission line-width (~0.0001 cm−1) difference-frequency-generation (DFG) laser system is used as the tunable light source. To retrieve the CH4 spectroscopic parameters, Voigt and Galatry profiles were used to simulate the measured line shape of the individual transitions.

Evidence Of A Mira-Like Tail And Bow Shock About The Semi-Regular Variable V Cvn From Four Decades Of Polarization Measurements., Hilding R. Neilson, Richard Ignace, Beverly J. Smith, Gary Henson, Alyssa M. Adams

Richard Ignace

Inferring The Global Cosmic Dust Influx To The Earth’S Atmosphere From Lidar Observations Of The Vertical Flux Of Mesospheric Na, Chester S. Gardner, Alan Z. Liu, Dan Marsh, Wuhu Feng, John Plane

Alan Z Liu

C/2013 R1 (Lovejoy) At Ir Wavelengths And The Variability Of Co Abundances Among Oort Cloud Comets, L. Paganini, M. J. Mumma, G. L. Villanueva, J. V. Keane, G. A. Blake, B. P. Bonev, M. A. Disanti, E. L. Gibb, K. J. Meech

Erika Gibb

The Redshift Search Receiver 3 Mm Wavelength Spectra Of 10 Galaxies, Ronald L. Snell, Gopal Narayanan, Min Yun, M Heyer, A Chung, William M. Irvine, Nr Erickson, G Liu

William M. Irvine

The 3 mm wavelength spectra of 10 galaxies have been obtained at the Five College Radio Astronomy Observatory using a new, very broadband receiver and spectrometer, called the Redshift Search Receiver (RSR). The RSR has an instantaneous bandwidth of 37 GHz covering frequencies from 74 to 111 GHz and has a spectral resolution of 31 MHz (~100 km s–1). During tests of the RSR on the FCRAO 14 m telescope the complete 3 mm spectra of the central regions of NGC 253, Maffei 2, NGC1068, IC 342, M82, NGC 3079, NGC 3690, NGC 4258, Arp 220, and NGC 6240 were …

The Final Journey Of The Saturn V, Andrew R. Thomas, Paul N. Thomarios

Andrew R. Thomas

The Saturn V rocket carried men to the moon, and its history reflects the US space program's rise, success, and demise. In 1961, John F. Kennedy challenged America to put a man on the moon and win the space race. Neil Armstrong set foot on the moon in 1969 in the culmination of a concerted scientific and technological effort. A little over a decade later, the Saturn rocket was tossed aside to rot in a field near the Kennedy Space Center in Florida. The rocket's carcass became the home to flora and fauna. Like the space program itself, the rocket …

Finite Difference Schemes For Second Order Systems Describing Black Holes, Mohammad Motamed, Maria Babiuc-Hamilton, B. Szilágyi, H-O. Kreiss, J. Winicour

Maria Babiuc-Hamilton

In the harmonic description of general relativity, the principal part of Einstein’s equations reduces to 10 curved space wave equations for the components of the space-time metric. We present theorems regarding the stability of several evolution-boundary algorithms for such equations when treated in second order differential form. The theorems apply to a model black hole space-time consisting of a spacelike inner boundary excising the singularity, a timelike outer boundary and a horizon in between. These algorithms are implemented as stable, convergent numerical codes and their performance is compared in a 2-dimensional excision problem.

Discovery Of X-Ray Pulsations From A Massive Star., Lidia M. Oskinova, Yael Nazé, Helge Todt, David P. Huenemoerder, Richard Ignace, Swetlana Hubrig, Wolf-Rainer Hamann

Richard Ignace

X-ray emission from stars much more massive than the Sun was discovered only 35 years ago. Such stars drive fast stellar winds where shocks can develop, and it is commonly assumed that the X-rays emerge from the shock-heated plasma. Many massive stars additionally pulsate. However, hitherto it was neither theoretically predicted nor observed that these pulsations would affect their X-ray emission. All X-ray pulsars known so far are associated with degenerate objects, either neutron stars or white dwarfs. Here we report the discovery of pulsating X-rays from a non-degenerate object, the massive B-type star ξ¹ CMa. This star is …

Faraday Rotation Effects For Diagnosing Magnetism In Bubble Environments., Richard Ignace

Richard Ignace

Faraday rotation is a process by which the position angle (PA) of background linearly polarized light is rotated when passing through an ionized and magnetized medium. The effect is sensitive to the line-of-sight magnetic field in conjunction with the electron density. This contribution highlights diagnostic possibilities of inferring the magnetic field (or absence thereof) in and around wind-blown bubbles from the Faraday effect. Three cases are described as illustrations: a stellar toroidal magnetic field, a shocked interstellar magnetic field, and an interstellar magnetic field within an ionized bubble.

Gravitational Wave Astrophysics With Compact Binary Systems, Eric Addison

Eric Addison

Dark Matter As An Integral Part Of An Alternative Gravity Model, Hontas Farmer

Hontas F Farmer

The purpose of this paper is to reconcile observations of dark matter effects on the galactic and cosmological scales with the null results of astroparticle physics observations such as CDMS and ANTARES. This paper will also provide a candidate unified and simpler mathematical formulation for the Lambda CDM model. Unification is achieved by a combination of the f(R) approach, with the standard LCDM approach and inflationary models. It is postulated that dark matter-energy fields depend on the Ricci curvature R. Standard methods of classical and quantum field theory on curved space time are applied. When this model is treated as …

Disk-Outflow Models As Applied To High Mass Star Forming Regions Through Methanol And Water Maser Observations, Hontas Farmer

Hontas F Farmer

As the recent publication by Breen et al (2013) found Class II methanol masers are exclusively associated with high mass star forming regions. Based on the positions of the Class I and II methanol and H2O masers, UC H~II regions and 4.5~μm infrared sources, and the center velocities (vLSR) of the Class I methanol and H2O masers, compared to the vLSR of the Class II methanol masers, we propose three disk-outflow models that may be traced by methanol masers. In all three models, we have located the Class II methanol maser near the protostar, and the Class I methanol maser …

The Molecular Gas Reservoir Of 6 Low-Metallicity Galaxies From The Herschel Dwarf Galaxy Survey: A Ground-Based Follow-Up Survey Of Co(1-0), Co(2-1), And Co(3-2), D. Cormier, S. Madden, V. Lebouteiller, S. Hony, S. Aalto, F. Costagliola, A. Huges, N. Abel, E. Bayet, John Cannon, R. Cumming, M. Galametz, F. Galliano, A. Remy-Ruyer, S. Viti, R. Wu

John Cannon

No abstract provided.

Soliciting The Universe, A Prose/Poem 4/1/2014, Charles Kay Smith

Charles Kay Smith

Why it may not be wise to radio our presence into outer space, but why humans are compelled by their neotenic proclivities to be curious and to solicit attention.

Conformal Gravity Holography In Four Dimensions, Robert Mcnees

Robert A McNees IV

We formulate four-dimensional conformal gravity with (anti–)de Sitter boundary conditions that are weaker than Starobinsky boundary conditions, allowing for an asymptotically subleading Rindler term concurrent with a recent model for gravity at large distances. We prove the consistency of the variational principle and derive the holographic response functions. One of them is the conformal gravity version of the Brown–York stress tensor, the other is a “partially massless response”. The on shell action and response functions are finite and do not require holographic renormalization. Finally, we discuss phenomenologically interesting examples, including the most general spherically symmetric solutions and rotating black hole …

The Allen Telescope Array Search For Electrostatic Discharges On Mars, Marin M. Anderson, Andrew P.V. Siemion, William C. Barott, Geoffery C. Bower, Gregory T. Delory, Imke De Pater, Dan Werthimer

William Barott

The Allen Telescope Array was used to monitor Mars between 2010 March 9 and June 2, over a total of approximately 30 hr, for radio emission indicative of electrostatic discharge. The search was motivated by the report from Ruf et al. of the detection of non-thermal microwave radiation from Mars characterized by peaks in the power spectrum of the kurtosis, or kurtstrum, at 10 Hz, coinciding with a large dust storm event on 2006 June 8. For these observations, we developed a wideband signal processor at the Center for Astronomy Signal Processing and Electronics Research. This 1024 channel spectrometer calculates …

Convection, Granulation, And Period Jitter In Classical Cepheids., Hilding R. Neilson, Richard Ignace

Richard Ignace

Analyses of recent observations of the sole classical Cepheid in the Kepler field, V1154 Cygni, found random changes of about 30 min in the pulsation period. These period changes challenge standard theories of pulsation and evolution because the period change is non-secular, and explaining this period jitter is necessary for understanding stellar evolution and the role of Cepheids as precise standard candles. We suggest that convection and convective hot spots can explain the observed period jitter. Convective hot spots alter the timing of flux maximum and minimum in the Cepheid light curve, hence change the measured pulsation period. We present …

An Extremely Optically Dim Tidal Feature In The Gas-Rich Interacting Galaxy Group Ngc 871/Ngc 876/Ngc 877, K. Lee-Waddell, K. Spekkens, J.-C. Cuillandre, John Cannon, M. Haynes, J. Sick, P. Chandra, N. Patra, S. Stierwalt, R. Giovanelli

John Cannon

No abstract provided.

Distance Determinations To Shield Galaxies From Hst Imaging, Kristen Mcquinn, John Cannon, Andrew Dolphin, Evan Skillman, John Salzer, Martha Haynes, Elizabeth Adams, Ian Cave, Ed Elson, Riccardo Giovanelli, Juergen Ott, Amelie Saintonge

John Cannon

No abstract provided.

The Rarity Of Dust In Metal Poor Galaxies, David Fisher, Alberto Bolatto, Rodrigo Herrera-Camus, Bruce Draine, Jessica Donaldson, Fabian Walter, Karin Sandstrom, Adam Leroy, John Cannon, Karl Gordon

John Cannon

Preprint in ArXiV is titled - "Dust May be More Rare Than Expected in Metal Poor Galaxies"

The Lyman-Alpha Reference Sample: I. Survey Outline And First Results For Markarian 259, G. Ostlin, M. Hayes, F. Duval, A. Sandberg, T. Rivera-Thorsen, T. Marquart, I. Orlitova, A. Adamo, J. Melinder, L. Guaita, H. Atek, John Cannon, P. Gruyters, E. Herenz, D. Kunth, P. Laursen, J. Mas-Hesse, G. Micheva, H. Oti-Floranes, S. Pardy, M. Roth, D. Schaerer, A. Verhamme

John Cannon

No abstract provided.

Worlds Without End: The Many Lives Of The Multiverse, Mary-Jane Rubenstein

Mary-Jane Rubenstein

Worlds without End explores the recent proliferation of "multiverse" cosmologies, which imagine our universe as just one of a vast, even infinite, number of others. While this idea has been the stuff of philosophy, religion, and literature for millennia, it is now under consideration as a scientific hypothesis, with wildly different models emerging from the fields of cosmology, quantum mechanics, and string theory. Beginning with the Atomistic and Stoic philosophies of ancient Greece, this book assembles a genealogy of the multiverse, seeking to map contemporary models in relation to their forerunners, and to ask why the proposition has become such …

The Lyman Alpha Reference Sample: Ii. Hst Imaging Results, Integrated Properties And Trends, Matthew Hayes, Goran Ostlin, Florent Duval, Andreas Sandberg, Lucia Guaita, Jens Melinder, Angela Adamo, Daniel Schaerer, Anne Verhamme, Ivana Orlitova, J. Mas-Hesse, John Cannon, Hakim Atek, Daniel Kunth, Peter Laursen, Hector Ot-Floranes, Stephen Pardy, Thøger Rivera-Thorsen, E. Herenz

John Cannon

No abstract provided.

Alfalfa Discovery Of The Nearby Gas-Rich Dwarf Galaxy Leo P. V. Neutral Gas Dynamics And Kinematics, E. Bernstein-Cooper, John Cannon, E. Elson, S. Warren, J. Chengalur, E. Skillman, E. Adams, A. Bolatto, R. Giovanelli, M. Haynes, K. Mcquinn, S. Pardy, K. Rhode, J. Salzer

John Cannon

No abstract provided.