High Energy Astrophysics at Southampton
Lead Research Organisation:
University of Southampton
Department Name: Sch of Physics and Astronomy
Abstract
On the stellar scale we are interested in the significance of different environments on the evolution of high mass X-ray binary (HMXB) populations, in particular between the Milky Way and the SMC, where differing star formation rates and metallicities could be crucial. What are the relative importances of local and interstellar obscuration in what we see? Here the upcoming 2Msec INTEGRAL Key Programme observation of the SMC, almost unaffected by obscuration, will be of great value. Globular clusters are outstanding laboratories for studying stellar dynamics and stellar evolution, especially for understanding the most exotic stellar populations. We are drawing together observations of large samples of globular clusters to understand which cluster properties are most important for the production of these exotic stars, and comparing with low stellar density dwarf spheroidal galaxies to isolate the stellar evolution from stellar dynamics. The Netherlands-based low frequency radio array, LOFAR, is about to open a new window on the universe providing the first radio `all sky monitor'. We will study coherent radio bursts, perhaps associated with merging neutron stars, detectable at enormous distances (to z=7), providing a unique probe of the intergalactic medium and possibly even testing theories of gravity and cosmological distance scales via identification of LIGO inspiral events We will continue our research into the coupling between accretion and outflow (jets) in X-ray binaries, and how it relates to parallel processes in AGN (where scaling laws with black hole mass are established), accreting neutron stars and white dwarfs. We have amassed the first comprehensive database of black hole spectral states and will extend this analysis to include X-ray timing and radio results. Thus we will produce the most comprehensive analysis to date of the relation between black hole accretion flows and the formation and power of relativistic jets. The results can be applied to AGN feedback in galaxies and clusters. We will greatly improve our knowledge of the scaling relationship between characteristic X-ray timescale, mass and accretion rate in Seyfert galaxies and Galactic binaries, thus testing physical models for this important universal relationship. We will determine whether the relationship applies in jet dominated ``blazars'', implying a universal origin for variability. We are building a model, based on propagating fluctuations, to provide physical understanding of all spectral-timing relationships to derive physical parameters, eg disc emissivity profile. This model, with additional X-ray reprocessing, should also explain X-ray/optical correlations in AGN so we will test it against our X-ray/optical monitoring. To provide a census of the nearby universe on which models of the more distant universe can be built, we are heavily involved in eMERLIN legacy surveys of nearby galaxy samples It is now widely accepted that some process must reheat the gas in galaxy clusters or large amounts of cool gas, which are not seen, would be found in the cores of clusters of galaxies. But what is the heating mechanism? In our most theoretical project we will investigate, via MHD simulations, whether the dissipation of turbulent energy, driven by merger events, galaxy motions and AGN outflows, may be responsible. On the largest scales, both AGN and starforming galaxies (SFGs) contribute to the faint radio source population, but what is the mix? By combining radio morphology with a variety of spectral energy diagnostics we can distinguish AGN from SFGs. Hence, using radio luminosity as a starformation rate (SFR) indicator, we can determine the evolution of the cosmic SFR in an absorption-independent manner. We will push this technique to much higher redshifts, as major contributors to eMERLIN deep field legacy surveys, and also probe the relationship between SFGs and AGN.
Organisations
Publications
Stappers B
(2011)
Observing pulsars and fast transients with LOFAR
in Astronomy & Astrophysics
Capitanio F
(2011)
FINDING PERSISTENT SOURCES WITH THE BeppoSAX /WIDE FIELD CAMERA: AN IN-DEPTH ANALYSIS
in The Astrophysical Journal Supplement Series
Emmanoulopoulos D
(2011)
An XMM-Newton view of the 'bare' nucleus of Fairall 9? XMM-Newton observations of Fairall 9
in Monthly Notices of the Royal Astronomical Society
Uthas H
(2011)
The cataclysmic variable SDSS J1507+52: an eclipsing period bouncer in the Galactic halo
in Monthly Notices of the Royal Astronomical Society: Letters
Owen R
(2011)
IKT 16: a composite supernova remnant in the Small Magellanic Cloud
in Astronomy & Astrophysics
Sturm R
(2011)
The XMM-Newton survey of the Small Magellanic Cloud: discovery of the 11.866 s Be/X-ray binary pulsar XMMU J004814.0-732204(SXP11.87)
in Astronomy & Astrophysics
Jones S
(2011)
Radio and X-ray variability in the Seyfert galaxy NGC 4051 Radio/X-ray variability in NGC 4051
in Monthly Notices of the Royal Astronomical Society
Russell D
(2011)
TESTING THE JET QUENCHING PARADIGM WITH AN ULTRADEEP OBSERVATION OF A STEADILY SOFT STATE BLACK HOLE
in The Astrophysical Journal
Ogrean G
(2011)
Evidence for a merger-revived radio phoenix in MaxBCG J217.95869+13.53470 Evidence for a merger-revived radio phoenix
in Monthly Notices of the Royal Astronomical Society
Knigge C
(2011)
THE EVOLUTION OF CATACLYSMIC VARIABLES AS REVEALED BY THEIR DONOR STARS
in The Astrophysical Journal Supplement Series
Russell D
(2011)
A tool to separate optical/infrared disc and jet emission in X-ray transient outbursts: the colour-magnitude diagrams of XTE J1550-564 CMDs to separate OIR disc/jet emission
in Monthly Notices of the Royal Astronomical Society
Ubertini P
(2011)
The INTEGRAL high energy sky and the MeV-GeV connection
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Peacock M
(2011)
The ultraviolet colour of globular clusters in M31: a core density effect? The UV colour of globular clusters in M31
in Monthly Notices of the Royal Astronomical Society
Evans D
(2011)
THE SUZAKU VIEW OF THE DISK-JET CONNECTION IN THE LOW-EXCITATION RADIO GALAXY NGC 6251
in The Astrophysical Journal
Emmanoulopoulos D
(2011)
An XMM-Newton view of the `bare' nucleus of Fairall 9
Knigge C
(2011)
Two populations of X-ray pulsars produced by two types of supernova.
in Nature
Moin A
(2011)
e-VLBI observations of Circinus X-1: monitoring of the quiescent and flaring radio emission on au scales e-VLBI observations of Circinus X-1
in Monthly Notices of the Royal Astronomical Society
Emmanoulopoulos D
(2011)
Negative X-ray reverberation time delays from MCG-6-30-15 and Mrk 766
Hardcastle M
(2011)
Modelling TeV ?-ray emission from the kiloparsec-scale jets of Centaurus A and M87 TeV jets in Cen A & M87
in Monthly Notices of the Royal Astronomical Society
Scaringi S
(2011)
Confirmation of 1RXS J165443.5-191620 as an intermediate polar and its orbital and spin periods
in Astronomy & Astrophysics
Croston J
(2011)
A LARGE-SCALE SHOCK SURROUNDING A POWERFUL RADIO GALAXY?
in The Astrophysical Journal
Yoon D
(2011)
JET TRAILS AND MACH CONES: THE INTERACTION OF MICROQUASARS WITH THE INTERSTELLAR MEDIUM
in The Astrophysical Journal
Leigh N
(2011)
An analytic model for blue straggler formation in globular clusters Blue straggler formation in globular clusters
in Monthly Notices of the Royal Astronomical Society
Wang Y
(2011)
The entrainment-limited evolution of FR II sources: maximum sizes and a possible connection to FR Is The entrainment-limited evolution of FR IIs
in Monthly Notices of the Royal Astronomical Society
Ferrari C
(2011)
Discovery of the correspondence between intra-cluster radio emission and a high pressure region detected through the Sunyaev-Zel'dovich effect
in Astronomy & Astrophysics
Coriat M
(2011)
Radiatively efficient accreting black holes in the hard state: the case study of H1743-322 H1743-322: radio/X-ray correlation
in Monthly Notices of the Royal Astronomical Society
D'Ammando F
(2011)
AGILE detection of extreme ? -ray activity from the blazar PKS 1510-089 during March 2009 Multifrequency analysis?
in Astronomy & Astrophysics
Chatterjee R
(2011)
CONNECTION BETWEEN THE ACCRETION DISK AND JET IN THE RADIO GALAXY 3C 111
in The Astrophysical Journal
Broderick J
(2011)
Is there really a dichotomy in active galactic nucleus jet power? Is there really a dichotomy in AGN jet power?
in Monthly Notices of the Royal Astronomical Society
Schurch M
(2011)
Orbital period determinations for four SMC Be/X-ray binaries Orbital period determinations for four BeXRBs
in Monthly Notices of the Royal Astronomical Society
Joseph T
(2011)
The unusual radio transient in M82: an SS 433 analogue?
in Monthly Notices of the Royal Astronomical Society: Letters
Sguera V
(2011)
IGR J17354-3255 as a candidate intermediate supergiant fast X-ray transient possibly associated with the transient MeV AGL J1734-3310 IGR J17354-3255 as candidate SFXT
in Monthly Notices of the Royal Astronomical Society
Körding E
(2011)
Detection of radio emission from a nova-like cataclysmic variable: evidence of jets?
in Monthly Notices of the Royal Astronomical Society: Letters
Emmanoulopoulos D
(2011)
Variability studies in blazar jets with SF analysis: caveats and problems
in Proceedings of the International Astronomical Union
Jurua E
(2011)
The optical and X-ray light curves of Hercules X-1 The optical and X-ray light curves of Her X-1
in Monthly Notices of the Royal Astronomical Society
Panessa F
(2011)
Narrow-line Seyfert 1 galaxies at hard X-rays? INTEGRAL narrow-line Seyfert 1
in Monthly Notices of the Royal Astronomical Society
Lira P
(2011)
Optical and near-IR long-term monitoring of NGC 3783 and MR 2251-178: evidence for variable near-IR emission from thin accretion discs Optical and near-IR monitoring
in Monthly Notices of the Royal Astronomical Society
Shelton D
(2011)
The dynamics and environmental impact of 3C 452 The dynamics & environmental impact of 3C 452
in Monthly Notices of the Royal Astronomical Society
Coe M
(2011)
The XMM-Newton survey of the Small Magellanic Cloud: XMMU J005011.2-730026 = SXP 214, a Be/X-ray binary pulsar? SXP 214
in Monthly Notices of the Royal Astronomical Society
Jonker P
(2011)
THE GALACTIC BULGE SURVEY: OUTLINE AND X-RAY OBSERVATIONS
in The Astrophysical Journal Supplement Series
Emmanoulopoulos D
(2011)
Negative X-ray reverberation time delays from MCG-6-30-15 and Mrk 766
in Monthly Notices of the Royal Astronomical Society: Letters
Leigh N
(2011)
Dissecting the colour-magnitude diagram: a homogeneous catalogue of stellar populations in globular clusters Dissecting the colour-magnitude diagram
in Monthly Notices of the Royal Astronomical Society
Hota A
(2011)
Discovery of a spiral-host episodic radio galaxy
in Monthly Notices of the Royal Astronomical Society: Letters
Maiorano E
(2011)
Searching for active galactic nuclei among unidentified INTEGRAL sources Searching for AGNs among INTEGRAL sources
in Monthly Notices of the Royal Astronomical Society
Dunn R
(2011)
A global study of the behaviour of black hole X-ray binary discs X-ray binary discs: a gloabal study
in Monthly Notices of the Royal Astronomical Society
Coe M
(2010)
Exploring accretion theory with X-ray binaries in the Small Magellanic Cloud
in Monthly Notices of the Royal Astronomical Society
Drave S
(2010)
Discovery of the 51.47-d orbital period in the supergiant fast X-ray transient XTE J1739-302 with INTEGRAL XTE J1739-302
in Monthly Notices of the Royal Astronomical Society
RodrÃguez-Gil P
(2010)
The orbital period of V458 Vulpeculae, a post-double common-envelope nova
in Monthly Notices of the Royal Astronomical Society: Letters
Coe M
(2010)
INTEGRAL deep observations of the Small Magellanic Cloud INTEGRAL-SMC
in Monthly Notices of the Royal Astronomical Society
| Description | Many details regarding the accretion of material onto compact objects such as black holes, and the resulting emission, particularly with regard to the variability properties and to jets |
| Exploitation Route | We work on some of the major questions in high energy astrophysics and our work on timing properties and scaling relationships between different mass and accretion rates will certainly form the basis of future examinations of scaling relationships, ie are black holes the same, apart from scale? |
| Sectors | Creative Economy Education |
| Description | Other researchers have applied the techniques developed during the course of this grant to different types of astrophysical objects. We have also used them in the context of undergraduate projects on the time series analysis of stock market data, resulting the in the said undergraduates getting better paid jobs than their lecturers. |
| First Year Of Impact | 2010 |
| Sector | Creative Economy,Education,Financial Services, and Management Consultancy |
| Impact Types | Cultural |