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14 papers · 1 filter
A new method to quantify and reduce projection error in whole-solar-active-region parameters measured from vector magnetograms
David A. Falconer, Sanjiv K. Tiwari, Ronald L. Moore +1
Projection error limits the use of vector magnetograms of active regions (ARs) far from disk center. In this Letter, for ARs observed up to 60o from disk center, we demonstrate a m…
A Microfilament-Eruption Mechanism for Solar Spicules
Alphonse C. Sterling, Ronald L. Moore
Recent investigations indicate that solar coronal jets result from eruptions of small-scale chromospheric filaments, called minifilaments; that is, the jets are produced by scaled-…
Crossing the Eddington limit: examining disk spectra at high accretion rates
Andrew D. Sutton, Douglas A. Swartz, Timothy P. Roberts +3
The faintest ultraluminous X-ray sources (ULXs), those with 0.3-10 keV luminosities 1 < L_X/10^39 < 3 erg s^-1, tend to have X-ray spectra that are disk-like but broader than expec…
Miniature loops in the solar corona
Krzysztof Barczynski, Hardi Peter, Sabrina L. Savage
Magnetic loops filled with hot plasma are the main building blocks of the solar corona. Usually they have lengths of the order of the barometric scale height in the corona that is…
Geminga's puzzling pulsar wind nebula
B. Posselt, G. G. Pavlov, P. O. Slane +6
We report on six new Chandra observations of the Geminga pulsar wind nebula (PWN). The PWN consists of three distinct elongated structures - two pc long later…
Gravity Spy: Integrating Advanced LIGO Detector Characterization, Machine Learning, and Citizen Science
Michael Zevin, Scott Coughlin, Sara Bahaadini +15
(abridged for arXiv) With the first direct detection of gravitational waves, the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) has initiated a new field of as…