S. M. Rayner

Establishing a Culture of Care: The Responsibility of Educational Leadership

Sarah Bibi, S. M. Rayner

Abstract The focus of this chapter is on teachers’ well-being; specifically, how education policies designed to shape the dispositions and attitudes of school leaders and teachers may – purposefully or inadvertently – compromise their well-being and pose a risk to their continuation …

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VizieR Online Data Catalog: PSR J0537-6910 gamma-ray emission (HESS+, 2012)

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

VizieR Online Data Catalog: 1RXSJ101015.9-311909 VHE gamma-ray emission (HESS+, 2012)

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

SEARCH FOR DARK MATTER ANNIHILATION SIGNALS FROM THE FORNAX GALAXY CLUSTER WITH H.E.S.S.

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

The Fornax galaxy cluster was observed with the High Energy Stereoscopic System for a total live time of 14.5 hr, searching for very high energy (VHE; E > 100GeV) γ-rays from dark matter (DM) annihilation. No significant signal was found in searches …

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Discovery of VHEγ-ray emission and multi-wavelength observations of the BL Lacertae object 1RXS J101015.9 − 311909

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

1RXS J101015.9 − 311909 is a galaxy located at a redshift of z = 0.14 hosting an active nucleus (called AGN) belonging to the class of bright BL Lac objects. Observations at high (HE, E > 100 MeV) and very high (VHE, …

de, fr, ie, am, pl, gb, Afrique du Sud, se, Namibie, at (code pays fourni par la source)

THE 2010 VERY HIGH ENERGY γ-RAY FLARE AND 10 YEARS OF MULTI-WAVELENGTH OBSERVATIONS OF M 87

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

The giant radio galaxy M 87 with its proximity (16 Mpc), famous jet, and very massive black hole ((3 − 6) × 10 9 M ☉ ) provides a unique opportunity to investigate the origin of very high energy (VHE; E > …

de, fr, ie, am, pl, gb, Afrique du Sud, se, Namibie, at (code pays fourni par la source)

A multiwavelength view of the flaring state of PKS 2155-304 in 2006

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

Context. Multiwavelength (MWL) observations of the blazar PKS 2155-304 during two weeks in July and August 2006, the period when two exceptional flares at very high energies (VHE, E ≳ 100 GeV) occurred, provide a detailed picture of the evolution of its …

de, fr, ie, am, pl, gb, Afrique du Sud, se, Namibie, au, at (code pays fourni par la source)

Discovery of hard-spectrumγ-ray emission from the BL Lacertae object 1ES 0414+009

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

Context. 1ES 0414 + 009 (z = 0.287) is a distant high-frequency-peaked BL Lac object, and has long been considered a likely emitter of very-high-energy (VHE, E > 100 GeV) γ-rays due to its high X-ray and radio flux.

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Discovery of extended VHEγ-ray emission from the vicinity of the young massive stellar cluster Westerlund 1

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

Aims. Results obtained in very-high-energy (VHE; E ≥ 100 GeV) γ-ray observations performed with the H.E.S.S. telescope array are used to investigate particle acceleration processes in the vicinity of the young massive stellar cluster Westerlund 1 (Wd 1).

de, fr, ie, am, pl, gb, Afrique du Sud, se, Namibie, at (code pays fourni par la source)

Discovery of the source HESS J1356-645 associated with the young and energetic PSR J1357-6429

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

Context. Several newly discovered very-high-energy (VHE; E > 100 GeV) γ-ray sources in the Galaxy are thought to be associated with energetic pulsars. Among them, middle-aged (≳ 104 yr) systems exhibit large centre-filled VHE nebulae, offset from the pulsar position, which result …

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Very-high-energy gamma-ray emission from the direction of the Galactic globular cluster Terzan 5

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

The HESS very-high-energy (VHE, E > 0.1 TeV) gamma-ray telescope system has discovered a new source, HESS J1747-248. The measured integral flux is (1.2 ± 0.3) × 10-12 cm-2 s-1 above 440 GeV for a power-law photon spectral index of 2.5 ± …

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H.E.S.S. OBSERVATIONS OF THE GLOBULAR CLUSTERS NGC 6388 AND M15 AND SEARCH FOR A DARK MATTER SIGNAL

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

Observations of the globular clusters (GCs) NGC 6388 and M15 were carried out by the High Energy Stereoscopic System array of Cherenkov telescopes for a live time of 27.2 and 15.2 hr, respectively. No gamma-ray signal is found at the nominal target …

de, fr, ie, am, pl, gb, Afrique du Sud, se, Namibie, at (code pays fourni par la source)