Search Publications
The Spectroscopic Footprint of the Fast Solar Wind
De Pontieu, Bart; McIntosh, Scott W.; Leamon, Robert J.
We analyze a large, complex equatorial coronal hole (ECH) and its immediate surroundings with a focus on the roots of the fast solar wind. We start by demonstrating that our ECH is indeed a source of the fast solar wind at 1 AU by examining in situ plasma measurements in conjunction with recently developed measures of magnetic conditions of the ph…
Possible Evidence for a Fisk-type Heliospheric Magnetic Field. I. Analyzing Ulysses/KET Electron Observations
Fichtner, H.; Scherer, K.; Ferreira, S. E. S. +6 more
The propagation of energetic charged particles in the heliospheric magnetic field is one of the fundamental problems in heliophysics. In particular, the structure of the heliospheric magnetic field remains an unsolved problem and is discussed as a controversial topic. The first successful analytic approach to the structure of the heliospheric magn…
A Panchromatic View of NGC 602: Time-resolved Star Formation with the Hubble and Spitzer Space Telescopes
Smith, Linda J.; Cignoni, M.; Gallagher, J. S., III +16 more
We present the photometric catalogs for the star-forming cluster NGC 602 in the wing of the Small Magellanic Cloud covering a range of wavelengths from optical (HST/ACS F555W, F814W, and SMARTS/ANDICAM V, I) to infrared (Spitzer/IRAC 3.6, 4.5, 5.8, and 8 µm and MIPS 24 µm). Combining this with Infrared Survey Facility near-infrared pho…
Thermal X-Ray Emission from the Shocked Stellar Wind of Pulsar Gamma-Ray Binaries
Paredes, J. M.; Zabalza, V.; Bosch-Ramon, V.
Gamma-ray-loud X-ray binaries are binary systems that show non-thermal broadband emission from radio to gamma rays. If the system comprises a massive star and a young non-accreting pulsar, their winds will collide producing broadband non-thermal emission, most likely originated in the shocked pulsar wind. Thermal X-ray emission is expected from th…
Multiwavelength Spectroscopy of PSR B0656+14
Pavlov, George G.; Kargaltsev, Oleg; Durant, Martin
Using high-quality Hubble Space Telescope observations, we construct the near-infrared (NIR) to far-ultraviolet (FUV) spectral energy distribution (SED) of PSR B0656+14. The SED is non-monotonic. Fitting it with a simple combination of a Rayleigh-Jeans spectrum (UV) and non-thermal power law (PL; optical/NIR) leaves significant residuals, strongly…
HerMES: Lyman Break Galaxies Individually Detected at 0.7 <= z <= 2.0 in GOODS-N with Herschel/SPIRE
Pérez-Fournon, I.; Rodighiero, G.; Ilbert, O. +41 more
As part of the Herschel Multi-tiered Extragalactic Survey we have investigated the rest-frame far-infrared (FIR) properties of a sample of more than 4800 Lyman break galaxies (LBGs) in the Great Observatories Origins Deep Survey North field. Most LBGs are not detected individually, but we do detect a sub-sample of 12 objects at 0.7 < z < 1.6…
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev-Zel'dovich Clusters in the Southern Hemisphere
Gladders, M. D.; Rest, A.; Foley, R. J. +60 more
We present South Pole Telescope (SPT) observations of the five galaxy cluster candidates in the southern hemisphere which were reported as unconfirmed in the Planck Early Sunyaev-Zel'dovich (ESZ) sample. One cluster candidate, PLCKESZ G255.62-46.16, is located in the 2500 deg2 SPT SZ survey region and was reported previously as SPT-CL J…
X-Ray Spectral Curvature of High-frequency-peaked BL Lac Objects: A Predictor for the TeV Flux
Elvis, M.; Massaro, F.; Paggi, A. +1 more
Most of the extragalactic sources detected at TeV energies are BL Lac objects. They belong to the subclass of high-frequency-peaked BL Lac objects (HBLs) exhibiting spectral energy distributions with a lower energy peak in the X-ray band; this is widely interpreted as synchrotron emission from relativistic electrons. The X-ray spectra are generall…
Evolution of the Dust/Gas Environment around Herbig Ae/Be Stars
Liu, Tie; Qin, Sheng-Li; Wu, Yuefang +2 more
Using the KOSMA 3 m telescope, 54 Herbig Ae/Be (HAe/Be) stars were surveyed in CO and 13CO emission lines. The properties of the stars and their circumstellar environments were studied by fitting spectral energy distributions (SEDs). The mean line width of 13CO (2-1) lines of this sample is 1.87 km s-1. The average…
Three-dimensional Reconstruction of an Erupting Filament with Solar Dynamics Observatory and STEREO Observations
Li, Ting; Yang, Shuhong; Zhang, Jun +1 more
On 2010 August 1, a global solar event was launched involving almost the entire Earth-facing side of the Sun. This event mainly consisted of a C3.2 flare, a polar crown filament eruption, and two Earth-directed coronal mass ejections. The observations from the Solar Dynamics Observatory (SDO) and STEREO showed that all the activities were coupled …