Some told Automotive News they suspected the automaker's linchpin information technology system had been the target of a cyberattack. Nissan also declined to elaborate on how a power outage at a data center could take down such a mission-critical network and disable the company for several days.ĭealers were surprised the shutdown was so widespread and lengthy. Nissan spokesman Chris Keeffe did not estimate lost sales or production. The data crash also brought down production at Nissan's factories in Smyrna, Tenn., and Canton, Miss., according to the company. The system remained down for four days, grounding operations at many retailers. "Everything we do with Nissan goes through NNANet," said Tim Hill, owner of Hill Nissan in Winter Haven, Fla.
The system, referred to internally as NNANet, is the retailer's tool for ordering cars and parts, obtaining product rebate information to know how to structure a sale, checking on vehicle recalls, filing warranty claims to enable service work to be performed and priced, and seeking factory financing information. It was unclear at week's end how many new-vehicle sales Nissan Group lost from the glitch or what the ultimate cost will be to dealers, sales personnel and service shops. dealers as well as an undetermined number of retailers in Canada and Mexico. retail sales.īut the crisis also demonstrates a larger vulnerability for today's auto industry, which depends on complex digital vehicle distribution systems that link data and commerce among consumers, retailers, distribution networks, manufacturing plants and finance companies.Īll of that shut down for Nissan Group last week, affecting the operations of Nissan and Infiniti's approximately 1,300 U.S. The results were widespread and frustrating for the automaker and its retailers last week, sending customers away empty-handed and interrupting factory production - as Nissan Group is doggedly trying to shore up falling U.S.
The astrophysical origin of roughly half of the elements heavier than iron remains an open question.Multi-messenger observations such as gravitational waves from neutron-star mergers combined with electromagnetic counterparts have transformed observational astronomy in the past 5 years and directly probe the synthesis of heavy elements (‘kilonovae’).Based on recent observations, this Review conjectures that most of the heavy rapid neutron-capture (r-process) elements may be formed in winds from dense accretion discs, such as those that form in the aftermath of neutron-star mergers or in rare supernovae.Many open questions exist regarding the contribution of mergers of neutron stars and black holes and rare types of supernovae (magnetorotational supernovae and collapsars) to the galactic r-process.A critical Nissan Group data center in Denver crashed Aug. This Review summarizes recent results and charts future challenges and opportunities for identifying the astrophysical origin of roughly half of the elements heavier than iron. Multi-messenger observations of gravitational waves and electromagnetic radiation directly probe the synthesis of heavy elements in the Universe. These include insights into rapid neutron-capture (r-process) nucleosynthesis in neutron-star mergers and other astrophysical sites, such as collapsars and magnetorotational supernovae, with implications for nuclear (astro)physics more broadly, fundamental physics in compact astrophysical systems, as well as chemical evolution of galaxies. It provides a preview of the open questions that these observations raise and on future opportunities for both theory and observations. This Review reflects on recent observational surprises and speculates on their implications. A few years into the new era of multi-messenger astronomy, following Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO)’s, Virgo’s and Kagra’s third observation run, there is strong evidence for the detection of mergers of two neutron stars and of neutron stars and black holes. Together with ground and space electromagnetic observatories, they have provided key insights into the long-standing question of how the heavy elements in the periodic table are synthesized. Gravitational-wave detectors have transformed the way we observe the Universe. In the range of black hole spins in which the neutron star is tidallyĭisrupted ($\chi_$Cm ratio, such that the measured ESS value in meteorites may not correspond to that of the "last" major $r$-process event.
Star material through a finite-temperature nuclear-theory based equation of $7M_\odot-10M_\odot$, a neutrino leakage scheme, and a modeling of the neutron Mergers using black hole masses in the most likely range of We present a first exploration of the results of neutron star-black hole