1,144 research outputs found
GeV detection of HESS J0632+057
HESS J0632+057 is the only gamma-ray binary that has been detected at TeV
energies, but not at GeV energies yet. Based on nearly nine years of Fermi
Large Area Telescope (LAT) Pass 8 data, we report here on a deep search for the
gamma-ray emission from HESS J0632+057 in the 0.1-300 GeV energy range. We find
a previously unknown gamma-ray source, Fermi J0632.6+0548, spatially coincident
with HESS J0632+057. The measured flux of Fermi J0632.6+0548 is consistent with
the previous flux upper limit on HESS J0632+057 and shows variability that can
be related to the HESS J0632+057 orbital phase. We propose that Fermi
J0632.6+0548 is the GeV counterpart of HESS J0632+057. Considering the Very
High Energy (VHE) spectrum of HESS J0632+057, a possible spectral turnover
above 10 GeV may exist in Fermi J0632.6+0548, as appears to be common in other
established gamma-ray binaries.Comment: 17 pages, 4 figures, 1 table; Accepted for publication in Ap
A Population of Teraelectronvolt Pulsar Wind Nebulae in the H.E.S.S. Galactic Plane Survey
The most numerous source class that emerged from the H.E.S.S. Galactic Plane
Survey are Pulsar Wind Nebulae (PWNe). The 2013 reanalysis of this survey,
undertaken after almost 10 years of observations, provides us with the most
sensitive and most complete census of gamma-ray PWNe to date. In addition to a
uniform analysis of spectral and morphological parameters, for the first time
also flux upper limits for energetic young pulsars were extracted from the
data. We present a discussion of the correlation between energetic pulsars and
TeV objects, and their respective properties. We will put the results in
context with the current theoretical understanding of PWNe and evaluate the
plausibility of previously non-established PWN candidates.Comment: 4 pages, 5 figures. In Proceedings of the 33rd International Cosmic
Ray Conference (ICRC2013), Rio de Janeiro (Brazil
Discovery of VHE gamma-rays from the vicinity of the shell-type SNR G318.2+0.1 with H.E.S.S
The on-going H.E.S.S. Galactic Plane Survey continues to reveal new sources
of VHE gamma-rays. In particular, recent re-observations of the region around
the shell-type supernova remnant (SNR) G318.2+0.1 have resulted in the
discovery of statistically-significant very-high-energy (VHE) gamma-ray
emission from an extended region. Although the source remains unidentified,
archival observations of CO12 in the region provide an opportunity to
investigate a potential SNR/molecular cloud interaction. The morphological
properties of this newly-discovered VHE gamma-ray source HESSJ1457-593 are
presented and discussed in light of the multi-wavelength data available.Comment: 7 pages, 2 figures. Proc. of the 25th TEXAS Symposium on Relativistic
Astrophysics. To appear in Proceedings of Scienc
Phase Relations in the Li2O-V2O3-V2O5 System at 700 C: Correlations with Magnetic Defect Concentration in Heavy Fermion LiV2O4
The phase relations in the Li2O-V2O3-V2O5 ternary system at 700 C for
compositions in equilibrium with LiV2O4 are reported. This study clarified the
synthesis conditions under which low and high magnetic defect concentrations
can be obtained within the spinel structure of LiV2O4. We confirmed that the
LiV2O4 phase can be obtained containing low (0.006 mol%) to high (0.83 mol%)
magnetic defect concentrations n{defect} and with consistently high magnetic
defect spin S values between 3 and 6.5. The high n{defect} values were obtained
in the LiV2O4 phase in equilibrium with V2O3, Li3VO4, or LiVO2 and the low
values in the LiV2O4 phase in equilibrium with V3O5. A model is suggested to
explain this correlation.Comment: 6 pages, 7 figures; Phys. Rev. B (accepted
Results of the Third High Protein-High Lysine Wheat Observation Nursery Grown in 1977
This is the third report of results from a high protein-high lysine (HP-HL) wheat observation nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Science and Education Administration, U.S. Department of Agriculture, under a contract with the Agency for International Development, U.S. Department of State. Advanced experimental lines distributed to breeders and cooperators in the 3rd HP-HL nursery were selected from numerous hybrid combinations of both spring and winter types. All exhibited elevated protein and/or lysine in nursery trials in Nebraska or Arizona
Results of the Second High Protein-High Lysine Wheat Observation Nursery Grown in 1976
This is the second report of results from a high protein-high lysine (HP-HL) observation nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Science and Education Administration, U. S. Department of Agriculture, under a contract with the Agency for International Development, U. S. Department of State. Primary objectives of this nursery are to: (1) Systematically provide breeders and cooperators with superior genetic germplasm for elevated levels of protein and/or lysine. (2) Test the degree of expression of the high protein and high lysine traits in a diverse array of environments. Funding from USAID has permitted the Nebraska wheat program to establish breeding nurseries at Lincoln, Nebraska, for evaluation of winter genotypes and at Yuma, Arizona, for both spring and winter wheats. Advanced experimental lines distributed to breeders and cooperators in the 2nd HP-HL nursery were selected from numerous hybrid combinations of both spring and winter types. All exhibited elevated protein and/or elevated lysine in nursery trials at Nebraska and Arizona. The lines were screened for growth habit at Nebraska, and were assigned to the designated spring or winter sections of the 2nd HP-HL nursery
Results of the Second High Protein-High Lysine Wheat Observation Nursery Grown in 1976
This is the second report of results from a high protein-high lysine (HP-HL) observation nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Science and Education Administration, U. S. Department of Agriculture, under a contract with the Agency for International Development, U. S. Department of State. Primary objectives of this nursery are to: (1) Systematically provide breeders and cooperators with superior genetic germplasm for elevated levels of protein and/or lysine. (2) Test the degree of expression of the high protein and high lysine traits in a diverse array of environments. Funding from USAID has permitted the Nebraska wheat program to establish breeding nurseries at Lincoln, Nebraska, for evaluation of winter genotypes and at Yuma, Arizona, for both spring and winter wheats. Advanced experimental lines distributed to breeders and cooperators in the 2nd HP-HL nursery were selected from numerous hybrid combinations of both spring and winter types. All exhibited elevated protein and/or elevated lysine in nursery trials at Nebraska and Arizona. The lines were screened for growth habit at Nebraska, and were assigned to the designated spring or winter sections of the 2nd HP-HL nursery
Results of the Second High Protein-High Lysine Wheat Observation Nursery Grown in 1976
This is the second report of results from a high protein-high lysine (HP-HL) observation nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Science and Education Administration, U. S. Department of Agriculture, under a contract with the Agency for International Development, U. S. Department of State. Primary objectives of this nursery are to: (1) Systematically provide breeders and cooperators with superior genetic germplasm for elevated levels of protein and/or lysine. (2) Test the degree of expression of the high protein and high lysine traits in a diverse array of environments. Funding from USAID has permitted the Nebraska wheat program to establish breeding nurseries at Lincoln, Nebraska, for evaluation of winter genotypes and at Yuma, Arizona, for both spring and winter wheats. Advanced experimental lines distributed to breeders and cooperators in the 2nd HP-HL nursery were selected from numerous hybrid combinations of both spring and winter types. All exhibited elevated protein and/or elevated lysine in nursery trials at Nebraska and Arizona. The lines were screened for growth habit at Nebraska, and were assigned to the designated spring or winter sections of the 2nd HP-HL nursery
Results of the Second High Protein-High Lysine Wheat Observation Nursery Grown in 1976
This is the second report of results from a high protein-high lysine (HP-HL) observation nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Science and Education Administration, U. S. Department of Agriculture, under a contract with the Agency for International Development, U. S. Department of State. Primary objectives of this nursery are to: (1) Systematically provide breeders and cooperators with superior genetic germplasm for elevated levels of protein and/or lysine. (2) Test the degree of expression of the high protein and high lysine traits in a diverse array of environments. Funding from USAID has permitted the Nebraska wheat program to establish breeding nurseries at Lincoln, Nebraska, for evaluation of winter genotypes and at Yuma, Arizona, for both spring and winter wheats. Advanced experimental lines distributed to breeders and cooperators in the 2nd HP-HL nursery were selected from numerous hybrid combinations of both spring and winter types. All exhibited elevated protein and/or elevated lysine in nursery trials at Nebraska and Arizona. The lines were screened for growth habit at Nebraska, and were assigned to the designated spring or winter sections of the 2nd HP-HL nursery
Results of the Second High Protein-High Lysine Wheat Observation Nursery Grown in 1976
This is the second report of results from a high protein-high lysine (HP-HL) observation nursery organized in 1974 by the Nebraska Agricultural Experiment Station and the Science and Education Administration, U. S. Department of Agriculture, under a contract with the Agency for International Development, U. S. Department of State. Primary objectives of this nursery are to: (1) Systematically provide breeders and cooperators with superior genetic germplasm for elevated levels of protein and/or lysine. (2) Test the degree of expression of the high protein and high lysine traits in a diverse array of environments. Funding from USAID has permitted the Nebraska wheat program to establish breeding nurseries at Lincoln, Nebraska, for evaluation of winter genotypes and at Yuma, Arizona, for both spring and winter wheats. Advanced experimental lines distributed to breeders and cooperators in the 2nd HP-HL nursery were selected from numerous hybrid combinations of both spring and winter types. All exhibited elevated protein and/or elevated lysine in nursery trials at Nebraska and Arizona. The lines were screened for growth habit at Nebraska, and were assigned to the designated spring or winter sections of the 2nd HP-HL nursery
- …