Search Results - "Reep, Jeffrey W"

Tracking X-Ray Source Movement in a Retracting Flux Tube by Unverferth, John, Reep, Jeffrey W.

“…Abstract Solar flares produce sources of localized, enhanced X-ray emission, thought to be due to the acceleration of nonthermal electrons and the transport of…”
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Spectroscopic Observations of Current Sheet Formation and Evolution by Warren, Harry P., Brooks, David H., Ugarte-Urra, Ignacio, Reep, Jeffrey W., Crump, Nicholas A., Doschek, George A.

“…We report on the structure and evolution of a current sheet that formed in the wake of an eruptive X8.3 flare observed at the west limb of the Sun on 2017…”
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Understanding the Duration of Solar and Stellar Flares at Various Wavelengths by Reep, Jeffrey W., Airapetian, Vladimir S.

“…Abstract Recent irradiance measurements from numerous heliophysics and astrophysics missions including Solar Dynamics Observatory (SDO), GOES, Kepler, TESS,…”
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The Direct Relation between the Duration of Magnetic Reconnection and the Evolution of GOES Light Curves in Solar Flares by Reep, Jeffrey W., Toriumi, Shin

“…GOES soft X-ray light curves are used to measure the timing and duration of solar flare emission. The timing and duration of the magnetic reconnection and…”
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Modeling Time-variable Elemental Abundances in Coronal Loop Simulations by Reep, Jeffrey W., Unverferth, John, Barnes, Will T., Chhabra, Sherry

“…Abstract Numerous recent X-ray observations of coronal loops in both active regions and solar flares have shown clearly that elemental abundances vary with…”
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Mass Flows in Expanding Coronal Loops by Reep, Jeffrey W., Scott, Roger B., Chhabra, Sherry, Unverferth, John, Knizhnik, Kalman J.

“…Abstract An expansion of the cross-sectional area directly impacts the mass flow along a coronal loop and significantly alters the radiative and hydrodynamic…”
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Spectroscopic Observations of Coronal Rain Formation and Evolution Following an X2 Solar Flare by Brooks, David H., Reep, Jeffrey W., Ugarte-Urra, Ignacio, Unverferth, John E., Warren, Harry P.

“…Abstract A significant impediment to solving the coronal heating problem is that we currently only observe active region loops in their cooling phase. Previous…”
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A Hydrodynamic Model of Alfvénic Wave Heating in a Coronal Loop and Its Chromospheric Footpoints by Reep, Jeffrey W., Russell, Alexander J. B., Tarr, Lucas A., Leake, James E.

“…Alfvénic waves have been proposed as an important energy transport mechanism in coronal loops, capable of delivering energy to both the corona and chromosphere…”
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TRANSITION REGION AND CHROMOSPHERIC SIGNATURES OF IMPULSIVE HEATING EVENTS. I. OBSERVATIONS by Warren, Harry P., Reep, Jeffrey W., Crump, Nicholas A., Simões, Paulo J. A.

“…ABSTRACT We exploit the high spatial resolution and high cadence of the Interface Region Imaging Spectrograph (IRIS) to investigate the response of the…”
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TRANSITION REGION AND CHROMOSPHERIC SIGNATURES OF IMPULSIVE HEATING EVENTS. II. MODELING by Reep, Jeffrey W., Warren, Harry P., Crump, Nicholas A., Simões, Paulo J. A.

“…ABSTRACT Results from the Solar Maximum Mission showed a close connection between the hard X-ray (HXR) and transition region (TR) emission in solar flares…”
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Magnetic diffusion in solar atmosphere produces measurable electric fields by Anan, Tetsu, Casini, Roberto, Uitenbroek, Han, Schad, Thomas A., Socas-Navarro, Hector, Ichimoto, Kiyoshi, Jaeggli, Sarah A., Tiwari, Sanjiv K., Reep, Jeffrey W., Katsukawa, Yukio, Asai, Ayumi, Qiu, Jiong, Reardon, Kevin P., Tritschler, Alexandra, Wöger, Friedrich, Rimmele, Thomas R.

“…The efficient release of magnetic energy in astrophysical plasmas, such as during solar flares, can in principle be achieved through magnetic diffusion, at a…”
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A Solar Magnetic-fan Flaring Arch Heated by Nonthermal Particles and Hot Plasma from an X-Ray Jet Eruption by Lee, Kyoung-Sun, Hara, Hirohisa, Watanabe, Kyoko, Joshi, Anand D., Brooks, David H., Imada, Shinsuke, Prasad, Avijeet, Dang, Phillip, Shimizu, Toshifumi, Savage, Sabrina L., Moore, Ronald, Panesar, Navdeep K., Reep, Jeffrey W.

“…We have investigated an M1.3 limb flare, which develops as a magnetic loop/arch that fans out from an X-ray jet. Using Hinode/EIS, we found that the…”
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What Determines the X-Ray Intensity and Duration of a Solar Flare? by Reep, Jeffrey W., Knizhnik, Kalman J.

“…Solar flares are observed and classified according to their intensity measured with the Geostationary Operational Environmental Satellite (GOES) X-ray Sensors…”
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Electron Beams Cannot Directly Produce Coronal Rain by Reep, Jeffrey W., Antolin, Patrick, Bradshaw, Stephen J.

“…Coronal rain is ubiquitous in flare loops, forming shortly after the onset of the solar flare. Rain is thought to be caused by a thermal instability, a…”
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Solar Flare Irradiance: Observations and Physical Modeling by Reep, Jeffrey W., Siskind, David E., Warren, Harry P.

“…Abstract We examine Solar Dynamics Observatory (SDO)/EUV Variability Experiment (EVE) data to better understand solar flare irradiance, and how that irradiance…”
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The Duration of Energy Deposition on Unresolved Flaring Loops in the Solar Corona by Reep, Jeffrey W., Polito, Vanessa, Warren, Harry P., Crump, Nicholas A.

“…Solar flares form and release energy across a large number of magnetic loops. The global parameters of flares, such as the total energy released, duration,…”
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Delayed Development of Cool Plasmas in X-Ray Flares from the Young Sun-like Star κ1 Ceti by Hamaguchi, Kenji, Reep, Jeffrey W., Airapetian, Vladimir, Toriumi, Shin, Gendreau, Keith C., Arzoumanian, Zaven

“…The Neutron star Interior Composition Explorer (NICER) X-ray observatory observed two powerful X-ray flares equivalent to superflares from the nearby young…”
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Efficient Calculation of Non-local Thermodynamic Equilibrium Effects in Multithreaded Hydrodynamic Simulations of Solar Flares by Reep, Jeffrey W., Bradshaw, Stephen J., Crump, Nicholas A., Warren, Harry P.

“…Understanding the dynamics of the chromosphere is crucial to understanding energy transport across the solar atmosphere. The chromosphere is optically thick at…”
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Geometric Assumptions in Hydrodynamic Modeling of Coronal and Flaring Loops by Reep, Jeffrey W., Ugarte-Urra, Ignacio, Warren, Harry P., Barnes, Will T.

“…Abstract In coronal loop modeling, it is commonly assumed that the loops are semicircular with a uniform cross-sectional area. However, observed loops are…”
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Delayed Development of Cool Plasmas in X-Ray Flares from the Young Sun-like Star κ 1 Ceti by Hamaguchi, Kenji, Reep, Jeffrey W., Airapetian, Vladimir, Toriumi, Shin, Gendreau, Keith C., Arzoumanian, Zaven

“…Abstract The Neutron star Interior Composition Explorer (NICER) X-ray observatory observed two powerful X-ray flares equivalent to superflares from the nearby…”
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