Results 91 to 100 of about 197,763 (248)

The Black Hole Candidate Swift J1728.9–3613 and the Supernova Remnant G351.9–0.9

The Astrophysical Journal, 2023
A number of neutron stars have been observed within the remnants of the core-collapse supernova explosions that created them. In contrast, black holes are not yet clearly associated with supernova remnants (SNRs).
Mayura Balakrishnan, Paul A. Draghis, Jon M. Miller, Joe Bright, Robert Fender, Mason Ng, Edward Cackett, Andrew Fabian, Kip Kuntz, James C. A. Miller-Jones, Daniel Proga, Paul S. Ray, John Raymond, Mark Reynolds, Abderahmen Zoghbi   +14 more
doaj   +1 more source

Tentative evidence of spatially extended GeV emission from SS433/W50

, 2019
We analyze 10 years of Fermi-LAT data towards the SS433/W50 region. With the latest source catalog and diffuse background models, the gamma-ray excess from SS433/W50 is detected with a significance of 6{\sigma} in the photon energy range of 500 MeV - 10 ...
Liu, Bing, Sun, Xiao-Na, Wang, Xiang-Yu, Xi, Shao-Qiang, Yang, Rui-Zhi   +4 more
core   +1 more source

Search for and Identification of Young Compact Galactic Supernova Remnants Using THOR [PDF]

, 2021
S. Ranasinghe, D. A. Leahy, J. M. Stil
openalex   +1 more source

A CHANDRA X-RAY SURVEY OF EJECTA IN THE CASSIOPEIA A SUPERNOVA REMNANT [PDF]

, 2011
We present a survey of the X-ray-emitting ejecta in the Cassiopeia A supernova remnant (SNR) based on an extensive analysis of over 6000 spectral regions extracted on 2.″5–10″ angular scales using the Chandra 1 Ms observation.
U. Hwang, U. Hwang, J. Laming
semanticscholar   +1 more source

N‐Geranylated Amino Acid Surfactants with Low Critical Micelle Concentrations from Abundant, Naturally Derived Starting Materials

ChemistryOpen, EarlyView.
Cleaning Up Surfactants: Realising critical micelle concentrations lower than sodium dodecyl sulfate with sustainable surfactants prepared from amino acids and naturally occurring aldehydes. In this work, a simple method for the preparation of N‐alkylated amino acid surfactants in 1–2 steps is reported.
Brett L. Pollard, Yumeng Liu, Michael G. Gardiner, Luke A. Connal   +3 more
wiley   +1 more source

Exploring the Diffuse X-ray Emission of Supernova Remnant Kesteven 69 with XMM-Newton [PDF]

Journal of Astronomy and Space Sciences, 2013
We have investigated the X-ray emission from the shock-heated plasma of the Galactic supernova remnant Kesteven 69 with XMM-Newton. Assuming the plasma is at collisional ionization equilibrium, a plasma temperature and a column absorption are found to ...
Kyoung-Ae Seo, Chung Yue Hui
doaj   +1 more source

Progenitors of Recombining Supernova Remnants

, 2012
Usual supernova remnants have either ionizing plasma or plasma in collisional ionization equilibrium, i.e., the ionization temperature is lower than or equal to the electron temperature.
Blinnikov, Chevalier, Dwarkadas, Dwarkadas, Fryer, Hachisu, Hachisu, Itoh, Kawasaki, Moriya, Neill, Ohnishi, Ozawa, Pakmor, Prieto, Sawada, Schlegel, Shimizu, Smith, Smith, Uno, Wellons, Yamaguchi   +22 more
core   +1 more source

Synthesis, Characterization, and Energetic Performance of a New Copper Complex Based on 3,4,5‐Trinitro‐1H‐pyrazole

Propellants, Explosives, Pyrotechnics, EarlyView.
A new copper compound based on the trinitropyrazolate (TNP−) ligand ammonium copper(II) (tetrakis)trinitropyrazolate [(NH4+)2CuII(TNP−)4] has been prepared and structurally characterized, which displays different thermo‐chemical behaviour and sensitivity properties from the parent compound ammonium 3,4,5‐trinitropyrazolate. ABSTRACT The urgent need for
Ashfaq Afsar, Xiaojiao Liu, Patrick McMaster, Carole A. Morrison, Colin R. Pulham   +4 more
wiley   +1 more source

Radio Spectral Index and Expansion of 3C58

, 2001
We present new observations of the plerionic supernova remnant 3C58 with the VLA at 74 and 327 MHz. In addition, we re-reduced earlier observations at 1.4 and 4.9 GHz taken in 1973 and 1984. Comparing these various images, we find that: 1.
Aller H. D., Baars J. W. M., Green D. A., Green D. A., Green D. A., K. W. Weiler, M. F. Bietenholz, N. E. Kassim, Roberts D. A., Salvati M., Stephenson F. R., Tan S. M., Weiler K. W., Wilson A. S., Woltjer L.   +14 more
core   +1 more source

DISCOVERY OF TeV GAMMA-RAY EMISSION FROM TYCHO’S SUPERNOVA REMNANT [PDF]

, 2011
We report the discovery of TeV gamma-ray emission from the Type Ia supernova remnant (SNR) G120.1+1.4, known as Tycho's SNR. Observations performed in the period 2008–2010 with the VERITAS ground-based gamma-ray observatory reveal weak emission coming ...
V. Acciari, E. Aliu, T. Arlen, T. Aune, M. Beilicke, W. Benbow, S. Bradbury, J. Buckley, V. Bugaev, K. Byrum, A. Cannon, A. Cesarini, L. Ciupik, E. Collins-Hughes, W. Cui, R. Dickherber, C. Duke, M. Errando, J. Finley, G. Finnegan, L. Fortson, A. Furniss, N. Galante, D. Gall, G. Gillanders, S. Godambe, S. Griffin, J. Grube, R. Guenette, G. Gyuk, D. Hanna, J. Holder, John P. Hughes, C. Hui, T. Humensky, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, H. Krawczynski, F. Krennrich, M. Lang, S. LeBohec, A. Madhavan, G. Maier, P. Majumdar, S. McArthur, A. McCann, P. Moriarty, R. Mukherjee, R. Ong, M. Orr, A. Otte, D. Pandel, N. Park, J. Perkins, M. Pohl, J. Quinn, K. Ragan, L. Reyes, P. Reynolds, E. Roache, H. Rose, D. B. Saxon, M. Schroedter, G. Sembroski, G. D. Senturk, P. Slane, Andrew W. Smith, G. Tesic, M. Theiling, S. Thibadeau, K. Tsurusaki, A. Varlotta, V. Vassiliev, S. Vincent, M. Vivier, S. Wakely, J. Ward, T. Weekes, A. Weinstein, T. Weisgarber, D. Williams, M. Wood, B. Zitzer   +84 more
semanticscholar   +1 more source