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- Goddard Space Flight CenterUS477 papers
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27 papers · 2 filters
X-ray Brightening and UV Fading of Tidal Disruption Event ASASSN-15oi
S. Gezari, S. B. Cenko, I. Arcavi
We present late-time observations by Swift and XMM-Newton of the tidal disruption event (TDE) ASASSN-15oi that reveal that the source brightened in the X-rays by a factor of $\sim1…
The Sleeping Monster: NuSTAR observations of SGR 1806-20, 11 years after the Giant Flare
George Younes, Matthew G. Baring, Chryssa Kouveliotou +5
We report the analysis of 5 NuSTAR observations of SGR 1806-20 spread over a year from April 2015 to April 2016, more than 11 years following its Giant Flare (GF) of 2004. The sour…
Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +88
First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 201…
Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star
Iair Arcavi, D. Andrew Howell, Daniel Kasen +50
Every supernova hitherto observed has been considered to be the terminal explosion of a star. Moreover, all supernovae with absorption lines in their spectra show those lines decre…
Infrared Emission from Supernova Remnants: Formation and Destruction of Dust
Brian J. Williams, Tea Temim
We review the observations of dust emission in supernova rem- nants (SNRs) and supernovae (SNe). Theoretical calculations suggest that SNe, particularly core-collapse, should make…
A Deep Chandra X-ray Study of Neutron Star Coalescence GW170817
Daryl Haggard, Melania Nynka, John J. Ruan +4
We report Chandra observations of GW170817, the first neutron star-neutron star merger discovered by the joint LIGO-Virgo Collaboration, and the first direct detection of gravitati…