169 citations
- Pennsylvania State UniversityUS14 papers
- California Institute of TechnologyUS4 papers
- Center for Astrophysics Harvard & SmithsonianUS3 papers
- Chinese Academy of SciencesCN3 papers
- Ludwig-Maximilians-Universität MünchenDE3 papers
- National Astronomical ObservatoriesCN3 papers
- University of MichiganUS3 papers
- California State Polytechnic UniversityUS2 papers
- Cerro Tololo Inter-American ObservatoryCL2 papers
- Jet Propulsion LaboratoryUS2 papers
- Massachusetts Institute of TechnologyUS2 papers
- Max Planck Institute for Extraterrestrial PhysicsDE2 papers
16 papers
Magnetic Activity-Rotation-Age-Mass Relations in Late Pre-main Sequence Stars
Konstantin V. Getman, Eric D. Feigelson, Gordon P. Garmire
We study the four-dimensional relationships between magnetic activity, rotation, mass and age for solar-type stars in the age range 5-25Myr. This is the late-pre-main sequence (l-P…
Strong and Rapid X-ray Variability of the Super-Eddington Accreting Quasar SDSS J081456.10+532533.5
Jian Huang, Bin Luo, W. N. Brandt +6
We report strong and rapid X-ray variability found from the super-Eddington accreting quasar SDSS J081456.10+532533.5 at . It has a black-hole mass of $2.7\times10^{7}{M_…
First ejection from the PSR B1259-63/LS 2883 high mass gamma-ray binary detected during the 2021-2024 binary cycle
Jeremy Hare, George G. Pavlov, Oleg Kargaltsev +1
LS 2883/PSR B1259-63 is a high mass, eccentric gamma-ray binary that has previously been observed to eject X-ray emitting material. We report the results of recent Chandra observat…
The Nature of Luminous Quasars with Very Large C IV Equivalent Widths
Shuqi Fu, W. N. Brandt, Fan Zou +5
We report results for a complete sample of ten luminous radio-quiet quasars with large C IV equivalent widths (EW > 150 A). For 8/10 we performed Chandra snapshot observations. We…
Evolution of X-ray Activity in <25 Myr Old Pre-Main Sequence Stars
Konstantin V. Getman, Eric D. Feigelson, Gordon P. Garmire +4
Measuring the evolution of X-ray emission from pre-main sequence (PMS) stars gives insight into two issues: the response of magnetic dynamo processes to changes in interior structu…
Sensitive Chandra coverage of a representative sample of weak-line quasars: revealing the full range of X-ray properties
Q. Ni, W. N. Brandt, B. Luo +8
We present deeper Chandra observations for weak-line quasars (WLQs) in a representative sample that previously had limited X-ray constraints, and perform X-ray photometric analyses…