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Modeling solar force-free magnetic fields
A class of nonlinear force-free magnetic fields is presented, described in terms of the solutions to a second-order, nonlinear ordinary differential equation. These magnetic fields are…
Optical and Near-Infrared Observations of the Highly Reddened, Rapidly Expanding Type Ia Supernova SN 2006X in M100
- Xiaofeng Wang, Weidong Li, Youhong Zhang
- Physics
- 1 August 2007
We present extensive optical (UBVRI), near-infrared (JK) light curves and optical spectroscopy of the Type Ia supernova SN 2006X in the nearby galaxy NGC 4321 (M100). Our observations suggest that…
Rossby-Type Wave-Induced Periodicities in Flare Activities and Sunspot Areas or Groups during Solar Maxima
- Y. Lou
- Physics, Environmental Science
- 10 September 2000
The Gamma-Ray Spectrometer (GRS) aboard the Solar Maximum Mission (SMM) discovered a 154 day periodicity in solar flare rates. Subsequently, periodicities in various solar flare activities and in…
Anisotropy and Corotation of Galactic Cosmic Rays
- M. Amenomori, S. Ayabe, X. Zhou
- PhysicsScience
- 20 October 2006
TLDR
Periodicities in solar coronal mass ejections
- Y. Lou, Y.-M. Wang, Z. Fan, S. Wang, J. Wang
- Physics
- 14 July 2003
ABSTRACT Mid-term quasi-periodicities in solar coronal mass ejections (CMEs) during the mostrecent solar maximum cycle 23 are reported here for the first time using the four-year data (February 5,…
A Novel Color Parameter as a Luminosity Calibrator for Type Ia Supernovae
- Xiaofeng Wang, Lifan Wang, Xu Zhou, Y. Lou, Zong-wei Li
- Physics
- 26 January 2005
Type Ia supernovae (SNe Ia) provide us with a unique tool for measuring extragalactic distances and determining cosmological parameters. As a result, the precise and effective calibration for peak…
CLASSICAL NOVAE IN ANDROMEDA: LIGHT CURVES FROM THE PALOMAR TRANSIENT FACTORY AND GALEX
- Yi Cao, M. Kasliwal, R. Quimby
- Physics
- 11 January 2012
We present optical light curves of 29 novae in M31 during the 2009 and 2010 observing seasons of the Palomar Transient Factory (PTF). The dynamic and rapid cadences in PTF monitoring of M31, from one…
First Detection of Photons with Energy beyond 100 TeV from an Astrophysical Source.
- M. Amenomori, Y. Bao, X. Zhou
- PhysicsPhysical review letters
- 13 June 2019
TLDR
The Progenitor of SN 2004dj in a Star Cluster
- Xiaofeng Wang, Yanbin Yang, Zong-wei Li
- Physics
- 14 May 2005
The progenitor of Type II-P (P = plateau) supernova SN 2004dj is identified with a supergiant in a compact star cluster known as "Sandage's star 96" (S96) in the nearby spiral galaxy NGC 2403, which…
An Imaging and Spectral Study of 10 X-Ray Filaments around the Galactic Center
We report the detection of 10 new X-ray filaments using the data from the Chandra X-ray satellite for the inner 6′ (~15 pc) around the Galactic center (GC). All these X-ray filaments are…
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