Hae
Aineistot 1-10 / 10
OJ287: deciphering the 'Rosetta stone of blazars
OJ287 is the best candidate active galactic nucleus (AGN) for hosting a supermassive binary black hole (SMBBH) at very close separation. We present 120 Very Long Baseline Array (VLBA) observations (at 15 GHz) covering the ...
Study of the scattering of 15C at energies around the Coulomb barrier
<p>The neutron rich carbon isotope 15C is the only known case of an almost “pure” 2s1/2
single-neutron halo ground state configuration. At collision energies around the Coulomb barrier
the reaction dynamics is expected ...
Strongly Bipolar Inner Ejecta of the Normal Type IIP Supernova ASASSN-16at
We report distinctly double-peaked H alpha and H beta emission lines in the late-time, nebular-phase spectra (greater than or similar to 200 days) of the otherwise normal at early phases (less than or similar to 100 days) ...
High-precision broad-band linear polarimetry of early-type binaries. II. Variable, phase-locked polarization in triple Algol-type system λ Tauri
<p>Aim. To study the binary geometry of the classic Algol-type triple
system λ Tau, we have searched for polarization variations over
the orbital cycle of the inner semi-detached binary, arising from light
scattering ...
Very-high-energy gamma-rays from the Universe's middle age: detection of the z=0.940 blazar PKS 1441+25 with MAGIC
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The flat-spectrum radio quasar PKS 1441+25 at a redshift of z = 0.940 is detected between 40 and 250 GeV with a significance of 25.5 {sigma} using the MAGIC telescopes. Together with the gravitationally lensed blazar ...
Pulsating in Unison at Optical and X-Ray Energies: Simultaneous High Time Resolution Observations of the Transitional Millisecond Pulsar PSR J1023+0038
PSR J1023+0038 is the first millisecond pulsar discovered to pulsate in the visible band; such a detection took place when the pulsar was surrounded by an accretion disk and also showed X-ray pulsations. We report on the ...
SN2016coi (ASASSN-16fp): An Energetic H-stripped Core-collapse Supernova from a Massive Stellar Progenitor with Large Mass Loss
We present comprehensive observations and analysis of the energetic H-stripped SN 2016coi (a.k.a. ASASSN-16fp), spanning the gamma-ray through optical and radio wavelengths, acquired within the first hours to similar to ...
A Catastrophic Failure to Build a Massive Galaxy around a Supermassive Black Hole at z=3.84
We present observations of the stellar and molecular gas mass of SDSS J163909+282447.1, a luminous quasar at z = 3.84 with an extreme mass for a supermassive black hole (SMBH; M-BH 2.5 x 10(10) M-circle dot). The local ...